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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.

A223600 Petersen graph (8,2) coloring a rectangular array: number of 2 X n 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)
1 256
2 256
3 1504
4 6736
5 32768
6 156592
7 755200
8 3643024
9 17608064
10 85179184
11 412367104
12 1997306896
13 9677417600
14 46900761520
15 227339596288
16 1102103488912
17 5343259128704
18 25906912147504
19 125615423519488
20 609091866864400

List of values

[256, 256, 1504, 6736, 32768, 156592, 755200, 3643024, 17608064, 85179184, 412367104, 1997306896, 9677417600, 46900761520, 227339596288, 1102103488912, 5343259128704, 25906912147504, 125615423519488, 609091866864400]

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

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