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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.

A202887 Number of nX6 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Table of values

n a(n)
1 121
2 96941
3 45332961
4 19914296913
5 9024909392725
6 4095290003129296
7 1855037301620277541
8 840314045399310110892
9 380686256792369384392819
10 172460622525800448862240139
11 78128840457226148615810468318

List of values

[121, 96941, 45332961, 19914296913, 9024909392725, 4095290003129296, 1855037301620277541, 840314045399310110892, 380686256792369384392819, 172460622525800448862240139, 78128840457226148615810468318]

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

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