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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.

A222143 Number of nX7 0..4 arrays with no entry increasing mod 5 by 4 rightwards or downwards, starting with upper left zero.

Table of values

n a(n)
1 4096
2 19307236
3 91058563924
4 429480137694664
5 2025664524518719732
6 9554152945600145235628
7 45062665956031451017237456
8 212540440581498107104494924076
9 1002458198124109454670263957843332

List of values

[4096, 19307236, 91058563924, 429480137694664, 2025664524518719732, 9554152945600145235628, 45062665956031451017237456, 212540440581498107104494924076, 1002458198124109454670263957843332]

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

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