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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.

A218661 Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..1 nX6 array.

Table of values

n a(n)
1 31
2 3519
3 199489
4 12383361
5 775176415
6 48231228511
7 3004025019009
8 187110346460865
9 11653760352498463
10 725837910289490239
11 45207782461323582145
12 2815700819921566341313
13 175371845132587985115103

List of values

[31, 3519, 199489, 12383361, 775176415, 48231228511, 3004025019009, 187110346460865, 11653760352498463, 725837910289490239, 45207782461323582145, 2815700819921566341313, 175371845132587985115103]

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

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