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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.

A219075 Hilltop maps: number of nX5 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX5 array.

Table of values

n a(n)
1 17
2 625
3 17537
4 494713
5 14228041
6 407374825
7 11660290321
8 333882416305
9 9559854123673
10 273717397488937
11 7837125931615553
12 224393896465841065
13 6424880595963477921
14 183958193843792111121
15 5267120030903659835073

List of values

[17, 625, 17537, 494713, 14228041, 407374825, 11660290321, 333882416305, 9559854123673, 273717397488937, 7837125931615553, 224393896465841065, 6424880595963477921, 183958193843792111121, 5267120030903659835073]

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

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