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.

A221931 Number of 3Xn 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 1
2 184
3 5748
4 201378
5 6888458
6 236114556
7 8089630790
8 277061308667
9 9488649958342
10 324954778576668
11 11128548401493743
12 381112186997579115
13 13051688407062314783
14 446972092491243621991
15 15307140370408977681367

List of values

[1, 184, 5748, 201378, 6888458, 236114556, 8089630790, 277061308667, 9488649958342, 324954778576668, 11128548401493743, 381112186997579115, 13051688407062314783, 446972092491243621991, 15307140370408977681367]

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

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