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.

A207263 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 16
3 82
4 611
5 5904
6 45520
7 467686
8 4556171
9 48655983
10 567847595
11 6351729691
12 80023297510
13 1005050679531
14 12834603243934
15 174354454607454
16 2353308940308585
17 32870079608035300
18 470039857440029540

List of values

[2, 16, 82, 611, 5904, 45520, 467686, 4556171, 48655983, 567847595, 6351729691, 80023297510, 1005050679531, 12834603243934, 174354454607454, 2353308940308585, 32870079608035300, 470039857440029540]

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

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