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.

A207910 Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.

Table of values

n a(n)
1 13
2 169
3 611
4 2209
5 13865
6 87025
7 417425
8 2002225
9 10896915
10 59305401
11 303611925
12 1554330625
13 8194919925
14 43206195321
15 224558681991
16 1167115069561
17 6108464797743
18 31970576988009
19 166753685864931
20 869761961442529

List of values

[13, 169, 611, 2209, 13865, 87025, 417425, 2002225, 10896915, 59305401, 303611925, 1554330625, 8194919925, 43206195321, 224558681991, 1167115069561, 6108464797743, 31970576988009, 166753685864931, 869761961442529]

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

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