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.

A186555 Number of (n+1)X3 0..3 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors.

Table of values

n a(n)
1 3891
2 227890
3 13360840
4 783375343
5 45931015744
6 2693039069563
7 157898954845170
8 9257972050372672
9 542815792619425874
10 31826514833666294971
11 1866060384036495988230
12 109411331246371391577832

List of values

[3891, 227890, 13360840, 783375343, 45931015744, 2693039069563, 157898954845170, 9257972050372672, 542815792619425874, 31826514833666294971, 1866060384036495988230, 109411331246371391577832]

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

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