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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.

A218353 Hilltop maps: number of nX7 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..1 nX7 array.

Table of values

n a(n)
1 57
2 7361
3 757305
4 78394141
5 8199377227
6 856149291505
7 89373230342147
8 9330728065217697
9 974144457139164177
10 101701766819321353361
11 10617786795585969799967
12 1108509971334366966147185

List of values

[57, 7361, 757305, 78394141, 8199377227, 856149291505, 89373230342147, 9330728065217697, 974144457139164177, 101701766819321353361, 10617786795585969799967, 1108509971334366966147185]

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

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