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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.

A219083 Hilltop maps: number of 6Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 6Xn array.

Table of values

n a(n)
1 1
2 2007
3 137251
4 6879341
5 407374825
6 24734141495
7 1473655240387
8 87658679181837
9 5224891480887673
10 311448275014507959
11 18561000349587530731
12 1106162872162349349293
13 65924427026919551179361

List of values

[1, 2007, 137251, 6879341, 407374825, 24734141495, 1473655240387, 87658679181837, 5224891480887673, 311448275014507959, 18561000349587530731, 1106162872162349349293, 65924427026919551179361]

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

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