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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.

A267281 Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo n and the upper left element equal to 0.

Table of values

n a(n)
1 1
2 35
3 574
4 12214
5 330969
6 12954512
7 912215513

List of values

[1, 35, 574, 12214, 330969, 12954512, 912215513]

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