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.

A268746 Number of nX4 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

Table of values

n a(n)
1 13
2 89
3 623
4 4110
5 26334
6 165019
7 1016807
8 6183665
9 37209717
10 221970102
11 1314544140
12 7737069617
13 45297553803
14 263980824665
15 1532201345489
16 8861529601362
17 51088246525260
18 293694819166095
19 1684057081243885

List of values

[13, 89, 623, 4110, 26334, 165019, 1016807, 6183665, 37209717, 221970102, 1314544140, 7737069617, 45297553803, 263980824665, 1532201345489, 8861529601362, 51088246525260, 293694819166095, 1684057081243885]

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

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