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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.

A222140 Number of n X 4 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 64
2 8788
3 1206964
4 165770032
5 22767656980
6 3127020364012
7 429480137694664
8 58986884432558548
9 8101544704688334244
10 1112705429924911477552
11 152824358676750267429220
12 20989638386627725143014812

List of values

[64, 8788, 1206964, 165770032, 22767656980, 3127020364012, 429480137694664, 58986884432558548, 8101544704688334244, 1112705429924911477552, 152824358676750267429220, 20989638386627725143014812]

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

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