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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.

A221445 Hilltop maps: number of nX7 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..1 nX7 array.

Table of values

n a(n)
1 57
2 5785
3 543081
4 51186449
5 4832005625
6 456064257841
7 43045366565233
8 4062814670687601
9 383466625153100089
10 36193296042509422929
11 3416085237442369485553
12 322425410952503720400913

List of values

[57, 5785, 543081, 51186449, 4832005625, 456064257841, 43045366565233, 4062814670687601, 383466625153100089, 36193296042509422929, 3416085237442369485553, 322425410952503720400913]

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

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