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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.

A185834 Half the number of nX8 binary arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.

Table of values

n a(n)
1 13
2 1103
3 17877
4 257050
5 4143707
6 68363184
7 1073661088
8 17200095426
9 278159538826
10 4418356392225
11 71020967453692
12 1136704302337236
13 18204389915482609
14 291581361291318489
15 4670236803825684178

List of values

[13, 1103, 17877, 257050, 4143707, 68363184, 1073661088, 17200095426, 278159538826, 4418356392225, 71020967453692, 1136704302337236, 18204389915482609, 291581361291318489, 4670236803825684178]

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

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