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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.

A134262 Number of n X n binary matrices with every 1 adjacent to another 1 horizontally or vertically.

Table of values

n a(n)
1 1
2 10
3 250
4 22946
5 8222576
6 11168045764
7 57451983566596
8 1121231537486377866
9 82999668877677132763564
10 23304040481827726137141908956
11 24817820869161647380317564563160782

List of values

[1, 10, 250, 22946, 8222576, 11168045764, 57451983566596, 1121231537486377866, 82999668877677132763564, 23304040481827726137141908956, 24817820869161647380317564563160782]

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

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