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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.

A267287 Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo 7 and the upper left element equal to 0.

Table of values

n a(n)
1 720
2 4
3 4
4 40
5 8724
6 315356
7 4893787
8 55479601
9 912215513

List of values

[720, 4, 4, 40, 8724, 315356, 4893787, 55479601, 912215513]

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

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