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.

A208024 Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.

Table of values

n a(n)
1 10
2 100
3 378
4 1377
5 4823
6 17119
7 61292
8 218243
9 776100
10 2765576
11 9852117
12 35078967
13 124935587
14 444991022
15 1584772385
16 5644067960
17 20101607046
18 71591508557
19 254970749655
20 908076480129
21 3234105068568
22 11518206999371
23 41021924800776

List of values

[10, 100, 378, 1377, 4823, 17119, 61292, 218243, 776100, 2765576, 9852117, 35078967, 124935587, 444991022, 1584772385, 5644067960, 20101607046, 71591508557, 254970749655, 908076480129, 3234105068568, 11518206999371, 41021924800776]

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

Content is available under The OEIS End-User License Agreement.