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.

A302684 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 32
2 14
3 18
4 64
5 125
6 453
7 2013
8 6725
9 21745
10 80985
11 295335
12 1015113
13 3570091
14 12835677
15 45416833
16 159687591
17 566457119
18 2010993911
19 7108904181
20 25146289499
21 89111146015
22 315554058131
23 1116679458873
24 3953641136991
25 14000618548225

List of values

[32, 14, 18, 64, 125, 453, 2013, 6725, 21745, 80985, 295335, 1015113, 3570091, 12835677, 45416833, 159687591, 566457119, 2010993911, 7108904181, 25146289499, 89111146015, 315554058131, 1116679458873, 3953641136991, 14000618548225]