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.

A221257 Number of 3Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 0
2 16
3 30
4 2116
5 22268
6 488601
7 7356420
8 132273001
9 2175160988
10 37343243536
11 627439570380
12 10652755988736
13 179923226827008
14 3046558564618321
15 51520912019433840
16 871812703964410321
17 14747896839403221578

List of values

[0, 16, 30, 2116, 22268, 488601, 7356420, 132273001, 2175160988, 37343243536, 627439570380, 10652755988736, 179923226827008, 3046558564618321, 51520912019433840, 871812703964410321, 14747896839403221578]

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

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