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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.

A185823 1/5 the number of n X 7 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.

Table of values

n a(n)
1 65
2 426928
3 956312244
4 2852526229300
5 7662203273902712

List of values

[65, 426928, 956312244, 2852526229300, 7662203273902712]

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

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