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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.

A196808 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,3,0,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 99
3 1468
4 52291
5 1730105
6 46685074
7 1436535356
8 42144649101
9 1242942835600
10 36966191677933
11 1095659240954513
12 32430161990804370
13 960817109357914432
14 28466699840871876758
15 843388951593615572344
16 24985495292021432741463

List of values

[1, 99, 1468, 52291, 1730105, 46685074, 1436535356, 42144649101, 1242942835600, 36966191677933, 1095659240954513, 32430161990804370, 960817109357914432, 28466699840871876758, 843388951593615572344, 24985495292021432741463]

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

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