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.

A208687 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically.

Table of values

n a(n)
1 42
2 1764
3 7086
4 40581
5 269766
6 1346961
7 6398617
8 31733422
9 152209092
10 711191700
11 3333256899
12 15574230936
13 72263776797
14 334784881455
15 1550207903794
16 7167239737000
17 33109416636066
18 152910959100921
19 705957016908150

List of values

[42, 1764, 7086, 40581, 269766, 1346961, 6398617, 31733422, 152209092, 711191700, 3333256899, 15574230936, 72263776797, 334784881455, 1550207903794, 7167239737000, 33109416636066, 152910959100921, 705957016908150]

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

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