本帖最后由 王守恩 于 2020-11-12 14:22 编辑
好玩的数列!请您也来一串?
1,无漏:所有正整数都要有;
2,无重:每个数恰好出现一次;
3,无法:没规律,不会周期循环;
4,有限:堆数是约定的(这里是4堆)。
当然,每堆都要有通项公式的。
\(a(n)=1, 5, 09, 13, 17, 21, 25, 28, 32, 36, 40, 44, 48, 52, 56, 59, 62, 66, 70, 74, 78, 82, 86\)
\(b(n)=2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 80, 84, 88\)
\(c(n)=3, 7, 11, 15, 19, 23, 27, 31, 35, 39, 43, 47, 51, 55, 58, 63, 67, 71, 75, 79, 83, 87, 91\)
\(d(n)=4, 8, 12, 16, 20, 24, 29, 33, 37, 42, 46, 50, 54, 60, 64, 68, 72, 76, 81, 85, 90, 94, 98\)
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