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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.

A223603 Petersen graph (8,2) coloring a rectangular array: number of 5Xn 0..15 arrays where 0..15 label nodes of a graph with edges 0,1 0,8 8,14 8,10 1,2 1,9 9,15 9,11 2,3 2,10 10,12 3,4 3,11 11,13 4,5 4,12 12,14 5,6 5,13 13,15 6,7 6,14 7,0 7,15 and every array movement to a horizontal, diagonal or antidiagonal neighbor moves along an edge of this graph.

Table of values

n a(n)
1 1048576
2 40160
3 1931968
4 47659632
5 1807461152
6 63079247600
7 2400064408240
8 90938609732144
9 3502184025729312
10 135060601994290512
11 5225267725656119568
12 202291946619229066288
13 7836871271932729361344
14 303667249235629519756208

List of values

[1048576, 40160, 1931968, 47659632, 1807461152, 63079247600, 2400064408240, 90938609732144, 3502184025729312, 135060601994290512, 5225267725656119568, 202291946619229066288, 7836871271932729361344, 303667249235629519756208]

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

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