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.

A266159 Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to 4-1.

Table of values

n a(n)
1 8
2 16
3 40
4 272
5 5512
6 149232
7 3741272
8 88206664
9 2011246768
10 44947984536
11 994530883200
12 21910419274224
13 482270052357104
14 10627338833274072
15 234722322559349072
16 5199318920693106784
17 115536868266599859880

List of values

[8, 16, 40, 272, 5512, 149232, 3741272, 88206664, 2011246768, 44947984536, 994530883200, 21910419274224, 482270052357104, 10627338833274072, 234722322559349072, 5199318920693106784, 115536868266599859880]

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

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