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.

A188740 Number of n X n binary arrays without the pattern 1 1 1 diagonally, vertically or antidiagonally.

Table of values

n a(n)
1 2
2 16
3 292
4 17286
5 3283906
6 1536573216
7 2307086087740
8 10143499802360135
9 123466985032906186049
10 4528058434298770108386326
11 481947777827695507476795332215
12 147455854241909275954639647341005231

List of values

[2, 16, 292, 17286, 3283906, 1536573216, 2307086087740, 10143499802360135, 123466985032906186049, 4528058434298770108386326, 481947777827695507476795332215, 147455854241909275954639647341005231]

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

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