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.

A208422 Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically.

Table of values

n a(n)
1 13
2 169
3 611
4 3835
5 18395
6 100113
7 512525
8 2702193
9 14044303
10 73505289
11 383392451
12 2003126697
13 10456915209
14 54611619153
15 285148941623
16 1489042615021
17 7775302008851
18 40601362677837
19 212010307642445
20 1107075047855985

List of values

[13, 169, 611, 3835, 18395, 100113, 512525, 2702193, 14044303, 73505289, 383392451, 2003126697, 10456915209, 54611619153, 285148941623, 1489042615021, 7775302008851, 40601362677837, 212010307642445, 1107075047855985]

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

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