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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.

A233725 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal.

Table of values

n a(n)
1 40
2 756
3 29816
4 2723072
5 578163016
6 297173770244
7 365411698279744
8 1098248392267801764
9 7928574480658025834472
10 139889299008340046298542520

List of values

[40, 756, 29816, 2723072, 578163016, 297173770244, 365411698279744, 1098248392267801764, 7928574480658025834472, 139889299008340046298542520]

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

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