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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.

A184756 Half the number of n X 4 binary arrays with no 1 having an adjacent 1 both above and to its left.

Table of values

n a(n)
1 8
2 89
3 1056
4 12397
5 145778
6 1713803
7 20148584
8 236878817
9 2784890782
10 32740859687
11 384921344068
12 4525368067837
13 53202963328218
14 625486206737315
15 7353594054643744
16 86453298151112665
17 1016397248157274582

List of values

[8, 89, 1056, 12397, 145778, 1713803, 20148584, 236878817, 2784890782, 32740859687, 384921344068, 4525368067837, 53202963328218, 625486206737315, 7353594054643744, 86453298151112665, 1016397248157274582]

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

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