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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.

A209516 Number of (n+1) X 8 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.

Table of values

n a(n)
1 3813753
2 2505266673
3 1701725703867
4 1170258116647953
5 808953988260058047
6 560493388203596285283
7 388756746462464273412765
8 269773510833311326186049823
9 187249435580728303988081172345

List of values

[3813753, 2505266673, 1701725703867, 1170258116647953, 808953988260058047, 560493388203596285283, 388756746462464273412765, 269773510833311326186049823, 187249435580728303988081172345]

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

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