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.

A207468 Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

Table of values

n a(n)
1 10
2 100
3 358
4 1307
5 4219
6 11760
7 33393
8 88198
9 229458
10 590832
11 1486909
12 3739145
13 9312304
14 23088739
15 57148946
16 140903738
17 347166896
18 854103343
19 2099195971
20 5157634036
21 12663610465
22 31086972482
23 76294760274
24 187208257122

List of values

[10, 100, 358, 1307, 4219, 11760, 33393, 88198, 229458, 590832, 1486909, 3739145, 9312304, 23088739, 57148946, 140903738, 347166896, 854103343, 2099195971, 5157634036, 12663610465, 31086972482, 76294760274, 187208257122]