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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.

A181249 Number of nX6 binary matrices with no 2X2 block having four 1's.

Table of values

n a(n)
1 64
2 3105
3 160697
4 8191392
5 419045269
6 21418970801
7 1095020802848
8 55979092539545
9 2861765993703849
10 146298965997241152
11 7479088292930771309
12 382345515897175884705
13 19546245848381921238016
14 999242067236417336040593

List of values

[64, 3105, 160697, 8191392, 419045269, 21418970801, 1095020802848, 55979092539545, 2861765993703849, 146298965997241152, 7479088292930771309, 382345515897175884705, 19546245848381921238016, 999242067236417336040593]

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

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