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.

A207091 Number of 5Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically.

Table of values

n a(n)
1 20
2 400
3 4891
4 75221
5 1128580
6 16421568
7 243794389
8 3604761693
9 53194188406
10 786410096464
11 11619897293895
12 171676634669401
13 2536824358212672
14 37483707701916584
15 553852534268709149
16 8183735938885018145

List of values

[20, 400, 4891, 75221, 1128580, 16421568, 243794389, 3604761693, 53194188406, 786410096464, 11619897293895, 171676634669401, 2536824358212672, 37483707701916584, 553852534268709149, 8183735938885018145]

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

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