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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.

A197406 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,1,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 9
2 227
3 1626
4 25621
5 356211
6 4499426
7 60334353
8 801294395
9 10631272297
10 141478252511
11 1877225887699
12 24928405579380
13 331380977085358
14 4402455983432465
15 58475570189400714
16 776864156510384965

List of values

[9, 227, 1626, 25621, 356211, 4499426, 60334353, 801294395, 10631272297, 141478252511, 1877225887699, 24928405579380, 331380977085358, 4402455983432465, 58475570189400714, 776864156510384965]

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

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