cp's OEIS Frontend

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.

A284340 Number of 7 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Table of values

n a(n)
1 64
2 1689
3 122495
4 14581112
5 1544903012
6 179138039472
7 20513380740103
8 2451428833201600
9 290448052609643641
10 35231200322704249292
11 4253729721779461810333
12 520640922794348063107735

List of values

[64, 1689, 122495, 14581112, 1544903012, 179138039472, 20513380740103, 2451428833201600, 290448052609643641, 35231200322704249292, 4253729721779461810333, 520640922794348063107735]

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

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