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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.

A183718 1/20 of the number of (n+1) X 9 0..4 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease.

Table of values

n a(n)
1 985
2 18566
3 303170
4 5374440
5 94463507
6 1680902120
7 29887741084
8 532844962952
9 9498797049301
10 169444214222538
11 3022597001362206
12 53927539247910656
13 962146234750661827
14 17166919088214504572
15 306297928172424966016

List of values

[985, 18566, 303170, 5374440, 94463507, 1680902120, 29887741084, 532844962952, 9498797049301, 169444214222538, 3022597001362206, 53927539247910656, 962146234750661827, 17166919088214504572, 306297928172424966016]

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

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