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.

A196951 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,1,3,4,0 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 5
3 26
4 492
5 23956
6 3166711
7 1147966466
8 1139814557483
9 3088781045935076
10 22873717950695283084
11 463109589156291297397232
12 25624345402722028725104412700
13 3874850344967499961830383314013710

List of values

[1, 5, 26, 492, 23956, 3166711, 1147966466, 1139814557483, 3088781045935076, 22873717950695283084, 463109589156291297397232, 25624345402722028725104412700, 3874850344967499961830383314013710]

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

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