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.

A208079 Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 0 vertically.

Table of values

n a(n)
1 9
2 81
3 441
4 2601
5 15129
6 88209
7 514089
8 2996361
9 17464041
10 101787921
11 593263449
12 3457792809
13 20153493369
14 117463167441
15 684625511241
16 3990289900041
17 23257113888969
18 135552393433809
19 790057246713849
20 4604791086849321

List of values

[9, 81, 441, 2601, 15129, 88209, 514089, 2996361, 17464041, 101787921, 593263449, 3457792809, 20153493369, 117463167441, 684625511241, 3990289900041, 23257113888969, 135552393433809, 790057246713849, 4604791086849321]

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

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