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.

A302520 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 64
2 22
3 28
4 163
5 376
6 1088
7 4558
8 23944
9 95681
10 344525
11 1302832
12 5550086
13 23153940
14 91082448
15 353017903
16 1418215128
17 5785509156
18 23250191623
19 92140078093
20 367162912762
21 1476616246378
22 5935545674594
23 23726268173317
24 94734366451064

List of values

[64, 22, 28, 163, 376, 1088, 4558, 23944, 95681, 344525, 1302832, 5550086, 23153940, 91082448, 353017903, 1418215128, 5785509156, 23250191623, 92140078093, 367162912762, 1476616246378, 5935545674594, 23726268173317, 94734366451064]

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

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