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.

A268743 Number of n X n 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 2
2 11
3 143
4 4110
5 255651
6 34732937
7 10319681062
8 6744840113811
9 9736268648482947
10 31152408949342676906
11 221573405414594347811555
12 3511390061199964238627005057
13 124222798189336185449669887550302

List of values

[2, 11, 143, 4110, 255651, 34732937, 10319681062, 6744840113811, 9736268648482947, 31152408949342676906, 221573405414594347811555, 3511390061199964238627005057, 124222798189336185449669887550302]

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

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