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.

A207688 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 60
4 256
5 1872
6 15376
7 145200
8 1887876
9 32939236
10 653211364
11 16761239040
12 557862597604
13 24505820603880
14 1374667445474064
15 89177394083197716
16 7769360160391840000
17 912190244879661701508
18 129010731422391263108196

List of values

[2, 16, 60, 256, 1872, 15376, 145200, 1887876, 32939236, 653211364, 16761239040, 557862597604, 24505820603880, 1374667445474064, 89177394083197716, 7769360160391840000, 912190244879661701508, 129010731422391263108196]

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

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