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.

A207720 Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.

Table of values

n a(n)
1 14
2 196
3 1414
4 11970
5 97580
6 805154
7 6614706
8 54438356
9 447687702
10 3682876386
11 30292582572
12 249180165066
13 2049642453502
14 16859642486512
15 138680722738530
16 1140735510979302
17 9383250687334776
18 77183044399764898
19 634878161131002558

List of values

[14, 196, 1414, 11970, 97580, 805154, 6614706, 54438356, 447687702, 3682876386, 30292582572, 249180165066, 2049642453502, 16859642486512, 138680722738530, 1140735510979302, 9383250687334776, 77183044399764898, 634878161131002558]

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

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