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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.

A240458 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or three 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 16
2 375
3 7589
4 143237
5 2632690
6 47636104
7 854671234
8 15259447330
9 271656519692
10 4827854253348
11 85712180553955
12 1520764060039331
13 26972330503325401
14 478273812124771069
15 8479592950284098842
16 150327053689019608051

List of values

[16, 375, 7589, 143237, 2632690, 47636104, 854671234, 15259447330, 271656519692, 4827854253348, 85712180553955, 1520764060039331, 26972330503325401, 478273812124771069, 8479592950284098842, 150327053689019608051]

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

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