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.

A221928 Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.

Table of values

n a(n)
1 28
2 20933
3 6888458
4 2568601026
5 938516646422
6 344170748565832
7 126100252425009531
8 46209296640385349436
9 16932783333617347990176

List of values

[28, 20933, 6888458, 2568601026, 938516646422, 344170748565832, 126100252425009531, 46209296640385349436, 16932783333617347990176]

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

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