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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.

A195229 Number of lower triangles of an n X n 0..5 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less.

Table of values

n a(n)
1 6
2 36
3 428
4 9982
5 459880
6 42029278
7 7640055854
8 2767861764930
9 2001526172413328
10 2892451174381411040
11 8361331814456905846790
12 48387254396810574882721328
13 560941284568012233398098984786
14 13033945031291662448750033149621602

List of values

[6, 36, 428, 9982, 459880, 42029278, 7640055854, 2767861764930, 2001526172413328, 2892451174381411040, 8361331814456905846790, 48387254396810574882721328, 560941284568012233398098984786, 13033945031291662448750033149621602]

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

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