cp's OEIS Frontend

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.

A218349 Hilltop maps: number of nX3 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..1 nX3 array.

Table of values

n a(n)
1 5
2 41
3 291
4 2069
5 14811
6 105913
7 757305
8 5415209
9 38722037
10 276885777
11 1979899795
12 14157473937
13 101234450215
14 723887182917
15 5176228570197
16 37013146305509
17 264666248964889
18 1892522801570497
19 13532675845407459
20 96766768350125913

List of values

[5, 41, 291, 2069, 14811, 105913, 757305, 5415209, 38722037, 276885777, 1979899795, 14157473937, 101234450215, 723887182917, 5176228570197, 37013146305509, 264666248964889, 1892522801570497, 13532675845407459, 96766768350125913]

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

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