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.

A221900 Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns.

Table of values

n a(n)
1 6
2 266
3 7667
4 236532
5 7235107
6 221465158
7 6778558415
8 207481075456
9 6350624324828
10 194381582401875
11 5949680932424079
12 182109354161412326
13 5574049625663873593
14 170611934699230942606
15 5222133675326885401935

List of values

[6, 266, 7667, 236532, 7235107, 221465158, 6778558415, 207481075456, 6350624324828, 194381582401875, 5949680932424079, 182109354161412326, 5574049625663873593, 170611934699230942606, 5222133675326885401935]

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

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