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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.

A303455 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 64
2 8192
3 658204
4 55681352
5 4729712941
6 401712282811
7 34135836415352
8 2900896415900109
9 246526793165030703
10 20950755659230072765
11 1780476037311841468019
12 151311828052607951348154

List of values

[64, 8192, 658204, 55681352, 4729712941, 401712282811, 34135836415352, 2900896415900109, 246526793165030703, 20950755659230072765, 1780476037311841468019, 151311828052607951348154]

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

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