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.

A207258 Number of 7 X n 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

Table of values

n a(n)
1 42
2 1764
3 14406
4 64176
5 206514
6 541380
7 1231650
8 2524704
9 4777290
10 8483748
11 14307678
12 23117136
13 36023442
14 54423684
15 80047002
16 115004736
17 161844522
18 223608420
19 303895158
20 406926576
21 537618354
22 701655108
23 905569938
24 1156828512

List of values

[42, 1764, 14406, 64176, 206514, 541380, 1231650, 2524704, 4777290, 8483748, 14307678, 23117136, 36023442, 54423684, 80047002, 115004736, 161844522, 223608420, 303895158, 406926576, 537618354, 701655108, 905569938, 1156828512]