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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.

A147686 Late-growing permutations: number of permutations of 4 indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations.

Table of values

n a(n)
1 1
2 14
3 6930
4 5223915
5 27032968200
6 164401445439455
7 3627155158988429250
8 86733224358763671877835
9 5469038805616093755410863500

List of values

[1, 14, 6930, 5223915, 27032968200, 164401445439455, 3627155158988429250, 86733224358763671877835, 5469038805616093755410863500]

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

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