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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.

A221322 Number of n X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 1
2 17
3 2008
4 2460824
5 26135748494
6 2568131772343102
7 2242286238164144345340
8 17596650117587793920907469032

List of values

[1, 17, 2008, 2460824, 26135748494, 2568131772343102, 2242286238164144345340, 17596650117587793920907469032]

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

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