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.

A240628 Number of n X 5 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.

Table of values

n a(n)
1 40
2 16624
3 7462748
4 3367163455
5 1519699081714
6 685854075788477
7 309535605539765299
8 139697630796640339536
9 63047448929964784303613
10 28454174772679454861874697
11 12841757682871155282688313826
12 5795660627332850278874835069098
13 2615660794724892372200960575345057

List of values

[40, 16624, 7462748, 3367163455, 1519699081714, 685854075788477, 309535605539765299, 139697630796640339536, 63047448929964784303613, 28454174772679454861874697, 12841757682871155282688313826, 5795660627332850278874835069098, 2615660794724892372200960575345057]

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

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