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.

A269086 Number of nX5 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.

Table of values

n a(n)
1 23
2 191
3 1531
4 11314
5 80422
6 555789
7 3761534
8 25063389
9 164926651
10 1074440360
11 6941695514
12 44537043804
13 284052377508
14 1802408061740
15 11386034886784
16 71645923776799
17 449267054051740
18 2808501899850347
19 17508131088788801

List of values

[23, 191, 1531, 11314, 80422, 555789, 3761534, 25063389, 164926651, 1074440360, 6941695514, 44537043804, 284052377508, 1802408061740, 11386034886784, 71645923776799, 449267054051740, 2808501899850347, 17508131088788801]

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

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