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.

A208365 Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically.

Table of values

n a(n)
1 10
2 100
3 450
4 1953
5 9338
6 41433
7 177909
8 774134
9 3350020
10 14367500
11 61642245
12 264469320
13 1132543047
14 4847303685
15 20747148598
16 88770363000
17 379728672366
18 1624285944365
19 6947428890150
20 29713533493473
21 127078745348389

List of values

[10, 100, 450, 1953, 9338, 41433, 177909, 774134, 3350020, 14367500, 61642245, 264469320, 1132543047, 4847303685, 20747148598, 88770363000, 379728672366, 1624285944365, 6947428890150, 29713533493473, 127078745348389]

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

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