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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.

A219084 Hilltop maps: number of 7Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 7Xn array.

Table of values

n a(n)
1 1
2 7361
3 1019123
4 99118753
5 11660290321
6 1410242020653
7 167024618548071
8 19746897662050241
9 2339794277074504521
10 277259160805907947953
11 32846897167510082525531
12 3891392293661362699294561

List of values

[1, 7361, 1019123, 99118753, 11660290321, 1410242020653, 167024618548071, 19746897662050241, 2339794277074504521, 277259160805907947953, 32846897167510082525531, 3891392293661362699294561]

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

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