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.

A203541 Number of nX7 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.

Table of values

n a(n)
1 0
2 676
3 69920
4 8479744
5 1680210240
6 257720706244
7 44312000955508
8 7260263864381124
9 1226995111990493792
10 204147560099024833600
11 34127708705716358062368
12 5703975087798515553780804

List of values

[0, 676, 69920, 8479744, 1680210240, 257720706244, 44312000955508, 7260263864381124, 1226995111990493792, 204147560099024833600, 34127708705716358062368, 5703975087798515553780804]

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

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