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发表于 2025-6-26 11:29
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本帖最后由 yangchuanju 于 2025-6-26 13:47 编辑
将太阳617贴的第4部分86组整数解扩大到501组，它们都是原方程的整数解，其中b仍全以4结尾——
序 a c b a增 b增
…… …… …… ……
-250 -2182503 -1748 2181254 —— ——
-249 -2165058 -1741 2163814 -17445 17440
-248 -2147683 -1734 2146444 -17375 17370
-247 -2130378 -1727 2129144 -17305 17300
-246 -2113143 -1720 2111914 -17235 17230
-245 -2095978 -1713 2094754 -17165 17160
-244 -2078883 -1706 2077664 -17095 17090
-243 -2061858 -1699 2060644 -17025 17020
-242 -2044903 -1692 2043694 -16955 16950
-241 -2028018 -1685 2026814 -16885 16880
-240 -2011203 -1678 2010004 -16815 16810
-239 -1994458 -1671 1993264 -16745 16740
-238 -1977783 -1664 1976594 -16675 16670
-237 -1961178 -1657 1959994 -16605 16600
-236 -1944643 -1650 1943464 -16535 16530
-235 -1928178 -1643 1927004 -16465 16460
-234 -1911783 -1636 1910614 -16395 16390
-233 -1895458 -1629 1894294 -16325 16320
-232 -1879203 -1622 1878044 -16255 16250
-231 -1863018 -1615 1861864 -16185 16180
-230 -1846903 -1608 1845754 -16115 16110
-229 -1830858 -1601 1829714 -16045 16040
-228 -1814883 -1594 1813744 -15975 15970
-227 -1798978 -1587 1797844 -15905 15900
-226 -1783143 -1580 1782014 -15835 15830
-225 -1767378 -1573 1766254 -15765 15760
-224 -1751683 -1566 1750564 -15695 15690
-223 -1736058 -1559 1734944 -15625 15620
-222 -1720503 -1552 1719394 -15555 15550
-221 -1705018 -1545 1703914 -15485 15480
-220 -1689603 -1538 1688504 -15415 15410
-219 -1674258 -1531 1673164 -15345 15340
-218 -1658983 -1524 1657894 -15275 15270
-217 -1643778 -1517 1642694 -15205 15200
-216 -1628643 -1510 1627564 -15135 15130
-215 -1613578 -1503 1612504 -15065 15060
-214 -1598583 -1496 1597514 -14995 14990
-213 -1583658 -1489 1582594 -14925 14920
-212 -1568803 -1482 1567744 -14855 14850
-211 -1554018 -1475 1552964 -14785 14780
-210 -1539303 -1468 1538254 -14715 14710
-209 -1524658 -1461 1523614 -14645 14640
-208 -1510083 -1454 1509044 -14575 14570
-207 -1495578 -1447 1494544 -14505 14500
-206 -1481143 -1440 1480114 -14435 14430
-205 -1466778 -1433 1465754 -14365 14360
-204 -1452483 -1426 1451464 -14295 14290
-203 -1438258 -1419 1437244 -14225 14220
-202 -1424103 -1412 1423094 -14155 14150
-201 -1410018 -1405 1409014 -14085 14080
-200 -1396003 -1398 1395004 -14015 14010
-199 -1382058 -1391 1381064 -13945 13940
-198 -1368183 -1384 1367194 -13875 13870
-197 -1354378 -1377 1353394 -13805 13800
-196 -1340643 -1370 1339664 -13735 13730
-195 -1326978 -1363 1326004 -13665 13660
-194 -1313383 -1356 1312414 -13595 13590
-193 -1299858 -1349 1298894 -13525 13520
-192 -1286403 -1342 1285444 -13455 13450
-191 -1273018 -1335 1272064 -13385 13380
-190 -1259703 -1328 1258754 -13315 13310
-189 -1246458 -1321 1245514 -13245 13240
-188 -1233283 -1314 1232344 -13175 13170
-187 -1220178 -1307 1219244 -13105 13100
-186 -1207143 -1300 1206214 -13035 13030
-185 -1194178 -1293 1193254 -12965 12960
-184 -1181283 -1286 1180364 -12895 12890
-183 -1168458 -1279 1167544 -12825 12820
-182 -1155703 -1272 1154794 -12755 12750
-181 -1143018 -1265 1142114 -12685 12680
-180 -1130403 -1258 1129504 -12615 12610
-179 -1117858 -1251 1116964 -12545 12540
-178 -1105383 -1244 1104494 -12475 12470
-177 -1092978 -1237 1092094 -12405 12400
-176 -1080643 -1230 1079764 -12335 12330
-175 -1068378 -1223 1067504 -12265 12260
-174 -1056183 -1216 1055314 -12195 12190
-173 -1044058 -1209 1043194 -12125 12120
-172 -1032003 -1202 1031144 -12055 12050
-171 -1020018 -1195 1019164 -11985 11980
-170 -1008103 -1188 1007254 -11915 11910
-169 -996258 -1181 995414 -11845 11840
-168 -984483 -1174 983644 -11775 11770
-167 -972778 -1167 971944 -11705 11700
-166 -961143 -1160 960314 -11635 11630
-165 -949578 -1153 948754 -11565 11560
-164 -938083 -1146 937264 -11495 11490
-163 -926658 -1139 925844 -11425 11420
-162 -915303 -1132 914494 -11355 11350
-161 -904018 -1125 903214 -11285 11280
-160 -892803 -1118 892004 -11215 11210
-159 -881658 -1111 880864 -11145 11140
-158 -870583 -1104 869794 -11075 11070
-157 -859578 -1097 858794 -11005 11000
-156 -848643 -1090 847864 -10935 10930
-155 -837778 -1083 837004 -10865 10860
-154 -826983 -1076 826214 -10795 10790
-153 -816258 -1069 815494 -10725 10720
-152 -805603 -1062 804844 -10655 10650
-151 -795018 -1055 794264 -10585 10580
-150 -784503 -1048 783754 -10515 10510
-149 -774058 -1041 773314 -10445 10440
-148 -763683 -1034 762944 -10375 10370
-147 -753378 -1027 752644 -10305 10300
-146 -743143 -1020 742414 -10235 10230
-145 -732978 -1013 732254 -10165 10160
-144 -722883 -1006 722164 -10095 10090
-143 -712858 -999 712144 -10025 10020
-142 -702903 -992 702194 -9955 9950
-141 -693018 -985 692314 -9885 9880
-140 -683203 -978 682504 -9815 9810
-139 -673458 -971 672764 -9745 9740
-138 -663783 -964 663094 -9675 9670
-137 -654178 -957 653494 -9605 9600
-136 -644643 -950 643964 -9535 9530
-135 -635178 -943 634504 -9465 9460
-134 -625783 -936 625114 -9395 9390
-133 -616458 -929 615794 -9325 9320
-132 -607203 -922 606544 -9255 9250
-131 -598018 -915 597364 -9185 9180
-130 -588903 -908 588254 -9115 9110
-129 -579858 -901 579214 -9045 9040
-128 -570883 -894 570244 -8975 8970
-127 -561978 -887 561344 -8905 8900
-126 -553143 -880 552514 -8835 8830
-125 -544378 -873 543754 -8765 8760
-124 -535683 -866 535064 -8695 8690
-123 -527058 -859 526444 -8625 8620
-122 -518503 -852 517894 -8555 8550
-121 -510018 -845 509414 -8485 8480
-120 -501603 -838 501004 -8415 8410
-119 -493258 -831 492664 -8345 8340
-118 -484983 -824 484394 -8275 8270
-117 -476778 -817 476194 -8205 8200
-116 -468643 -810 468064 -8135 8130
-115 -460578 -803 460004 -8065 8060
-114 -452583 -796 452014 -7995 7990
-113 -444658 -789 444094 -7925 7920
-112 -436803 -782 436244 -7855 7850
-111 -429018 -775 428464 -7785 7780
-110 -421303 -768 420754 -7715 7710
-109 -413658 -761 413114 -7645 7640
-108 -406083 -754 405544 -7575 7570
-107 -398578 -747 398044 -7505 7500
-106 -391143 -740 390614 -7435 7430
-105 -383778 -733 383254 -7365 7360
-104 -376483 -726 375964 -7295 7290
-103 -369258 -719 368744 -7225 7220
-102 -362103 -712 361594 -7155 7150
-101 -355018 -705 354514 -7085 7080
-100 -348003 -698 347504 -7015 7010
-99 -341058 -691 340564 -6945 6940
-98 -334183 -684 333694 -6875 6870
-97 -327378 -677 326894 -6805 6800
-96 -320643 -670 320164 -6735 6730
-95 -313978 -663 313504 -6665 6660
-94 -307383 -656 306914 -6595 6590
-93 -300858 -649 300394 -6525 6520
-92 -294403 -642 293944 -6455 6450
-91 -288018 -635 287564 -6385 6380
-90 -281703 -628 281254 -6315 6310
-89 -275458 -621 275014 -6245 6240
-88 -269283 -614 268844 -6175 6170
-87 -263178 -607 262744 -6105 6100
-86 -257143 -600 256714 -6035 6030
-85 -251178 -593 250754 -5965 5960
-84 -245283 -586 244864 -5895 5890
-83 -239458 -579 239044 -5825 5820
-82 -233703 -572 233294 -5755 5750
-81 -228018 -565 227614 -5685 5680
-80 -222403 -558 222004 -5615 5610
-79 -216858 -551 216464 -5545 5540
-78 -211383 -544 210994 -5475 5470
-77 -205978 -537 205594 -5405 5400
-76 -200643 -530 200264 -5335 5330
-75 -195378 -523 195004 -5265 5260
-74 -190183 -516 189814 -5195 5190
-73 -185058 -509 184694 -5125 5120
-72 -180003 -502 179644 -5055 5050
-71 -175018 -495 174664 -4985 4980
-70 -170103 -488 169754 -4915 4910
-69 -165258 -481 164914 -4845 4840
-68 -160483 -474 160144 -4775 4770
-67 -155778 -467 155444 -4705 4700
-66 -151143 -460 150814 -4635 4630
-65 -146578 -453 146254 -4565 4560
-64 -142083 -446 141764 -4495 4490
-63 -137658 -439 137344 -4425 4420
-62 -133303 -432 132994 -4355 4350
-61 -129018 -425 128714 -4285 4280
-60 -124803 -418 124504 -4215 4210
-59 -120658 -411 120364 -4145 4140
-58 -116583 -404 116294 -4075 4070
-57 -112578 -397 112294 -4005 4000
-56 -108643 -390 108364 -3935 3930
-55 -104778 -383 104504 -3865 3860
-54 -100983 -376 100714 -3795 3790
-53 -97258 -369 96994 -3725 3720
-52 -93603 -362 93344 -3655 3650
-51 -90018 -355 89764 -3585 3580
-50 -86503 -348 86254 -3515 3510
-49 -83058 -341 82814 -3445 3440
-48 -79683 -334 79444 -3375 3370
-47 -76378 -327 76144 -3305 3300
-46 -73143 -320 72914 -3235 3230
-45 -69978 -313 69754 -3165 3160
-44 -66883 -306 66664 -3095 3090
-43 -63858 -299 63644 -3025 3020
-42 -60903 -292 60694 -2955 2950
-41 -58018 -285 57814 -2885 2880
-40 -55203 -278 55004 -2815 2810
-39 -52458 -271 52264 -2745 2740
-38 -49783 -264 49594 -2675 2670
-37 -47178 -257 46994 -2605 2600
-36 -44643 -250 44464 -2535 2530
-35 -42178 -243 42004 -2465 2460
-34 -39783 -236 39614 -2395 2390
-33 -37458 -229 37294 -2325 2320
-32 -35203 -222 35044 -2255 2250
-31 -33018 -215 32864 -2185 2180
-30 -30903 -208 30754 -2115 2110
-29 -28858 -201 28714 -2045 2040
-28 -26883 -194 26744 -1975 1970
-27 -24978 -187 24844 -1905 1900
-26 -23143 -180 23014 -1835 1830
-25 -21378 -173 21254 -1765 1760
-24 -19683 -166 19564 -1695 1690
-23 -18058 -159 17944 -1625 1620
-22 -16503 -152 16394 -1555 1550
-21 -15018 -145 14914 -1485 1480
-20 -13603 -138 13504 -1415 1410
-19 -12258 -131 12164 -1345 1340
-18 -10983 -124 10894 -1275 1270
-17 -9778 -117 9694 -1205 1200
-16 -8643 -110 8564 -1135 1130
-15 -7578 -103 7504 -1065 1060
-14 -6583 -96 6514 -995 990
-13 -5658 -89 5594 -925 920
-12 -4803 -82 4744 -855 850
-11 -4018 -75 3964 -785 780
-10 -3303 -68 3254 -715 710
-9 -2658 -61 2614 -645 640
-8 -2083 -54 2044 -575 570
-7 -1578 -47 1544 -505 500
-6 -1143 -40 1114 -435 430
-5 -778 -33 754 -365 360
-4 -483 -26 464 -295 290
-3 -258 -19 244 -225 220
-2 -103 -12 94 -155 150
-1 -18 -5 14 -85 80
0 -3 2 4 -15 10
1 -58 9 64 55 -60
2 -183 16 194 125 -130
3 -378 23 394 195 -200
4 -643 30 664 265 -270
5 -978 37 1004 335 -340
6 -1383 44 1414 405 -410
7 -1858 51 1894 475 -480
8 -2403 58 2444 545 -550
9 -3018 65 3064 615 -620
10 -3703 72 3754 685 -690
11 -4458 79 4514 755 -760
12 -5283 86 5344 825 -830
13 -6178 93 6244 895 -900
14 -7143 100 7214 965 -970
15 -8178 107 8254 1035 -1040
16 -9283 114 9364 1105 -1110
17 -10458 121 10544 1175 -1180
18 -11703 128 11794 1245 -1250
19 -13018 135 13114 1315 -1320
20 -14403 142 14504 1385 -1390
21 -15858 149 15964 1455 -1460
22 -17383 156 17494 1525 -1530
23 -18978 163 19094 1595 -1600
24 -20643 170 20764 1665 -1670
25 -22378 177 22504 1735 -1740
26 -24183 184 24314 1805 -1810
27 -26058 191 26194 1875 -1880
28 -28003 198 28144 1945 -1950
29 -30018 205 30164 2015 -2020
30 -32103 212 32254 2085 -2090
31 -34258 219 34414 2155 -2160
32 -36483 226 36644 2225 -2230
33 -38778 233 38944 2295 -2300
34 -41143 240 41314 2365 -2370
35 -43578 247 43754 2435 -2440
36 -46083 254 46264 2505 -2510
37 -48658 261 48844 2575 -2580
38 -51303 268 51494 2645 -2650
39 -54018 275 54214 2715 -2720
40 -56803 282 57004 2785 -2790
41 -59658 289 59864 2855 -2860
42 -62583 296 62794 2925 -2930
43 -65578 303 65794 2995 -3000
44 -68643 310 68864 3065 -3070
45 -71778 317 72004 3135 -3140
46 -74983 324 75214 3205 -3210
47 -78258 331 78494 3275 -3280
48 -81603 338 81844 3345 -3350
49 -85018 345 85264 3415 -3420
50 -88503 352 88754 3485 -3490
51 -92058 359 92314 3555 -3560
52 -95683 366 95944 3625 -3630
53 -99378 373 99644 3695 -3700
54 -103143 380 103414 3765 -3770
55 -106978 387 107254 3835 -3840
56 -110883 394 111164 3905 -3910
57 -114858 401 115144 3975 -3980
58 -118903 408 119194 4045 -4050
59 -123018 415 123314 4115 -4120
60 -127203 422 127504 4185 -4190
61 -131458 429 131764 4255 -4260
62 -135783 436 136094 4325 -4330
63 -140178 443 140494 4395 -4400
64 -144643 450 144964 4465 -4470
65 -149178 457 149504 4535 -4540
66 -153783 464 154114 4605 -4610
67 -158458 471 158794 4675 -4680
68 -163203 478 163544 4745 -4750
69 -168018 485 168364 4815 -4820
70 -172903 492 173254 4885 -4890
71 -177858 499 178214 4955 -4960
72 -182883 506 183244 5025 -5030
73 -187978 513 188344 5095 -5100
74 -193143 520 193514 5165 -5170
75 -198378 527 198754 5235 -5240
76 -203683 534 204064 5305 -5310
77 -209058 541 209444 5375 -5380
78 -214503 548 214894 5445 -5450
79 -220018 555 220414 5515 -5520
80 -225603 562 226004 5585 -5590
81 -231258 569 231664 5655 -5660
82 -236983 576 237394 5725 -5730
83 -242778 583 243194 5795 -5800
84 -248643 590 249064 5865 -5870
85 -254578 597 255004 5935 -5940
86 -260583 604 261014 6005 -6010
87 -266658 611 267094 6075 -6080
88 -272803 618 273244 6145 -6150
89 -279018 625 279464 6215 -6220
90 -285303 632 285754 6285 -6290
91 -291658 639 292114 6355 -6360
92 -298083 646 298544 6425 -6430
93 -304578 653 305044 6495 -6500
94 -311143 660 311614 6565 -6570
95 -317778 667 318254 6635 -6640
96 -324483 674 324964 6705 -6710
97 -331258 681 331744 6775 -6780
98 -338103 688 338594 6845 -6850
99 -345018 695 345514 6915 -6920
100 -352003 702 352504 6985 -6990
101 -359058 709 359564 7055 -7060
102 -366183 716 366694 7125 -7130
103 -373378 723 373894 7195 -7200
104 -380643 730 381164 7265 -7270
105 -387978 737 388504 7335 -7340
106 -395383 744 395914 7405 -7410
107 -402858 751 403394 7475 -7480
108 -410403 758 410944 7545 -7550
109 -418018 765 418564 7615 -7620
110 -425703 772 426254 7685 -7690
111 -433458 779 434014 7755 -7760
112 -441283 786 441844 7825 -7830
113 -449178 793 449744 7895 -7900
114 -457143 800 457714 7965 -7970
115 -465178 807 465754 8035 -8040
116 -473283 814 473864 8105 -8110
117 -481458 821 482044 8175 -8180
118 -489703 828 490294 8245 -8250
119 -498018 835 498614 8315 -8320
120 -506403 842 507004 8385 -8390
121 -514858 849 515464 8455 -8460
122 -523383 856 523994 8525 -8530
123 -531978 863 532594 8595 -8600
124 -540643 870 541264 8665 -8670
125 -549378 877 550004 8735 -8740
126 -558183 884 558814 8805 -8810
127 -567058 891 567694 8875 -8880
128 -576003 898 576644 8945 -8950
129 -585018 905 585664 9015 -9020
130 -594103 912 594754 9085 -9090
131 -603258 919 603914 9155 -9160
132 -612483 926 613144 9225 -9230
133 -621778 933 622444 9295 -9300
134 -631143 940 631814 9365 -9370
135 -640578 947 641254 9435 -9440
136 -650083 954 650764 9505 -9510
137 -659658 961 660344 9575 -9580
138 -669303 968 669994 9645 -9650
139 -679018 975 679714 9715 -9720
140 -688803 982 689504 9785 -9790
141 -698658 989 699364 9855 -9860
142 -708583 996 709294 9925 -9930
143 -718578 1003 719294 9995 -10000
144 -728643 1010 729364 10065 -10070
145 -738778 1017 739504 10135 -10140
146 -748983 1024 749714 10205 -10210
147 -759258 1031 759994 10275 -10280
148 -769603 1038 770344 10345 -10350
149 -780018 1045 780764 10415 -10420
150 -790503 1052 791254 10485 -10490
151 -801058 1059 801814 10555 -10560
152 -811683 1066 812444 10625 -10630
153 -822378 1073 823144 10695 -10700
154 -833143 1080 833914 10765 -10770
155 -843978 1087 844754 10835 -10840
156 -854883 1094 855664 10905 -10910
157 -865858 1101 866644 10975 -10980
158 -876903 1108 877694 11045 -11050
159 -888018 1115 888814 11115 -11120
160 -899203 1122 900004 11185 -11190
161 -910458 1129 911264 11255 -11260
162 -921783 1136 922594 11325 -11330
163 -933178 1143 933994 11395 -11400
164 -944643 1150 945464 11465 -11470
165 -956178 1157 957004 11535 -11540
166 -967783 1164 968614 11605 -11610
167 -979458 1171 980294 11675 -11680
168 -991203 1178 992044 11745 -11750
169 -1003018 1185 1003864 11815 -11820
170 -1014903 1192 1015754 11885 -11890
171 -1026858 1199 1027714 11955 -11960
172 -1038883 1206 1039744 12025 -12030
173 -1050978 1213 1051844 12095 -12100
174 -1063143 1220 1064014 12165 -12170
175 -1075378 1227 1076254 12235 -12240
176 -1087683 1234 1088564 12305 -12310
177 -1100058 1241 1100944 12375 -12380
178 -1112503 1248 1113394 12445 -12450
179 -1125018 1255 1125914 12515 -12520
180 -1137603 1262 1138504 12585 -12590
181 -1150258 1269 1151164 12655 -12660
182 -1162983 1276 1163894 12725 -12730
183 -1175778 1283 1176694 12795 -12800
184 -1188643 1290 1189564 12865 -12870
185 -1201578 1297 1202504 12935 -12940
186 -1214583 1304 1215514 13005 -13010
187 -1227658 1311 1228594 13075 -13080
188 -1240803 1318 1241744 13145 -13150
189 -1254018 1325 1254964 13215 -13220
190 -1267303 1332 1268254 13285 -13290
191 -1280658 1339 1281614 13355 -13360
192 -1294083 1346 1295044 13425 -13430
193 -1307578 1353 1308544 13495 -13500
194 -1321143 1360 1322114 13565 -13570
195 -1334778 1367 1335754 13635 -13640
196 -1348483 1374 1349464 13705 -13710
197 -1362258 1381 1363244 13775 -13780
198 -1376103 1388 1377094 13845 -13850
199 -1390018 1395 1391014 13915 -13920
200 -1404003 1402 1405004 13985 -13990
201 -1418058 1409 1419064 14055 -14060
202 -1432183 1416 1433194 14125 -14130
203 -1446378 1423 1447394 14195 -14200
204 -1460643 1430 1461664 14265 -14270
205 -1474978 1437 1476004 14335 -14340
206 -1489383 1444 1490414 14405 -14410
207 -1503858 1451 1504894 14475 -14480
208 -1518403 1458 1519444 14545 -14550
209 -1533018 1465 1534064 14615 -14620
210 -1547703 1472 1548754 14685 -14690
211 -1562458 1479 1563514 14755 -14760
212 -1577283 1486 1578344 14825 -14830
213 -1592178 1493 1593244 14895 -14900
214 -1607143 1500 1608214 14965 -14970
215 -1622178 1507 1623254 15035 -15040
216 -1637283 1514 1638364 15105 -15110
217 -1652458 1521 1653544 15175 -15180
218 -1667703 1528 1668794 15245 -15250
219 -1683018 1535 1684114 15315 -15320
220 -1698403 1542 1699504 15385 -15390
221 -1713858 1549 1714964 15455 -15460
222 -1729383 1556 1730494 15525 -15530
223 -1744978 1563 1746094 15595 -15600
224 -1760643 1570 1761764 15665 -15670
225 -1776378 1577 1777504 15735 -15740
226 -1792183 1584 1793314 15805 -15810
227 -1808058 1591 1809194 15875 -15880
228 -1824003 1598 1825144 15945 -15950
229 -1840018 1605 1841164 16015 -16020
230 -1856103 1612 1857254 16085 -16090
231 -1872258 1619 1873414 16155 -16160
232 -1888483 1626 1889644 16225 -16230
233 -1904778 1633 1905944 16295 -16300
234 -1921143 1640 1922314 16365 -16370
235 -1937578 1647 1938754 16435 -16440
236 -1954083 1654 1955264 16505 -16510
237 -1970658 1661 1971844 16575 -16580
238 -1987303 1668 1988494 16645 -16650
239 -2004018 1675 2005214 16715 -16720
240 -2020803 1682 2022004 16785 -16790
241 -2037658 1689 2038864 16855 -16860
242 -2054583 1696 2055794 16925 -16930
243 -2071578 1703 2072794 16995 -17000
244 -2088643 1710 2089864 17065 -17070
245 -2105778 1717 2107004 17135 -17140
246 -2122983 1724 2124214 17205 -17210
247 -2140258 1731 2141494 17275 -17280
248 -2157603 1738 2158844 17345 -17350
249 -2175018 1745 2176264 17415 -17420
250 -2192503 1752 2193754 17485 -17490
…… …… …… ……
以上501组a,c,b都是太阳617贴的整数解，c依次增大7，其中b的结尾都是4，
m=|b|之中没有一个素数。
该系列不定方程的整数解的参数b总是结尾为4的正整数，并可向上向下延伸至正无穷大；参数a总是负数，c有正有负，a和c可向上下延伸至正负无穷大；
参数c从c=2开始向上向下依次增减7；
参数a从a=-3开始向上向下依次减小15,85,155……或增大55,125,195……（二次增量是70）；
参数b从b=4开始向上向下依次增大10,80,150……或增大60,130,200……（二次增量是70）！
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