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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.

A195245 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 two or less.

Table of values

n a(n)
1 6
2 84
3 3776
4 533142
5 237368212
6 333437946202
7 1479091549959182
8 20728220266936919766
9 918037571811526229736636
10 128523191925989407344147529338
11 56883358880979630186940014533369490

List of values

[6, 84, 3776, 533142, 237368212, 333437946202, 1479091549959182, 20728220266936919766, 918037571811526229736636, 128523191925989407344147529338, 56883358880979630186940014533369490]

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

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