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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A215593 Number of permutations of n indistinguishable copies of 1..7 with every partial sum <= the same partial sum averaged over all permutations.

Table of values

n a(n)
0 1
1 1001
2 71892912
3 13126885205000
4 3627155158988429250
5 1267664556730792079292048
6 515544601327354412382720479328
7 233099041543988273824859604028713600
8 113972303622279852972722869873689584148750
9 59182016901859077504525075283397206729638923750

List of values

[1, 1001, 71892912, 13126885205000, 3627155158988429250, 1267664556730792079292048, 515544601327354412382720479328, 233099041543988273824859604028713600, 113972303622279852972722869873689584148750, 59182016901859077504525075283397206729638923750]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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