本帖最后由 王守恩 于 2020-11-21 09:46 编辑
Table[Table[((j + i)^2 + 3 j + i)/2, {j, 0, 15}], {i, 0, 9}]
{{0, 2, 5, 9, 14, 20, 27, 35, 44, 54, 65, 77, 90, 104, 119, 135},
{1, 4, 8, 13, 19, 26, 34, 43, 53, 64, 76, 89, 103, 118, 134, 151},
{3, 7, 12, 18, 25, 33, 42, 52, 63, 75, 88, 102, 117, 133, 150, 168},
{6, 11, 17, 24, 32, 41, 51, 62, 74, 87, 101, 116, 132, 149, 167, 186},
{10, 16, 23, 31, 40, 50, 61, 73, 86, 100, 115, 131, 148, 166, 185,205},
{15, 22, 30, 39, 49, 60, 72, 85, 99, 114, 130, 147, 165, 184, 204, 225},
{21, 29, 38, 48, 59, 71, 84, 98, 113, 129, 146, 164, 183, 203, 224, 246},
{28, 37, 47, 58, 70, 83, 97, 112, 128, 145, 163, 182, 202, 223, 245, 268},
{36, 46, 57, 69, 82, 96, 111, 127, 144, 162, 181, 201, 222, 244, 267, 291},
{45, 56, 68, 81, 95, 110, 126, 143, 161, 180, 200, 221, 243, 266, 290, 315}}
在这里,我们可以将所有自然数不漏不重地罗列出来。
虽然行有无数行,列有无数列。但从对角线出发,还是可以排序的。
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