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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.

A229411 Number of nX7 0..3 arrays avoiding 11 horizontally, 22 vertically, 33 antidiagonally and 00 diagonally.

Table of values

n a(n)
1 11772
2 22684613
3 46408035676
4 95053083585891
5 194334416016079648
6 397464769862060665547
7 812793729526357032659346
8 1662077845986538386898746421
9 3398973083707574732833877530359

List of values

[11772, 22684613, 46408035676, 95053083585891, 194334416016079648, 397464769862060665547, 812793729526357032659346, 1662077845986538386898746421, 3398973083707574732833877530359]

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

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