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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.

A253163 Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Table of values

n a(n)
1 186624
2 4189216
3 92998506
4 2461955138
5 62954425188
6 1612778665632
7 40892835737758
8 1045243631714532
9 26655995880836874
10 680590803725411114
11 17356137926136738110
12 442903594404834251862
13 11300064205772118129666

List of values

[186624, 4189216, 92998506, 2461955138, 62954425188, 1612778665632, 40892835737758, 1045243631714532, 26655995880836874, 680590803725411114, 17356137926136738110, 442903594404834251862, 11300064205772118129666]

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

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