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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.

A240269 Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

n a(n)
1 56
2 713
3 7562
4 126286
5 1363144
6 19210586
7 278945445
8 3200032085
9 46095401280
10 611757450541
11 7547496685660
12 107236644548985
13 1371266497746832
14 17737107517230511
15 244729672768718950
16 3116623507000444656

List of values

[56, 713, 7562, 126286, 1363144, 19210586, 278945445, 3200032085, 46095401280, 611757450541, 7547496685660, 107236644548985, 1371266497746832, 17737107517230511, 244729672768718950, 3116623507000444656]

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

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