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.

A197405 Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,1,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 5
2 71
3 358
4 3305
5 25621
6 199384
7 1634731
8 13013551
9 103260478
10 825286477
11 6597403489
12 52719871616
13 421012069157
14 3360781198751
15 26839340562982
16 214392512110323
17 1712358386200271
18 13675010695945780
19 109210026376844947

List of values

[5, 71, 358, 3305, 25621, 199384, 1634731, 13013551, 103260478, 825286477, 6597403489, 52719871616, 421012069157, 3360781198751, 26839340562982, 214392512110323, 1712358386200271, 13675010695945780, 109210026376844947]

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

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