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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.

A223556 T(n,k)=Petersen graph (3,1) coloring a rectangular array: number of nXk 0..5 arrays where 0..5 label nodes of a graph with edges 0,1 0,3 3,5 3,4 1,2 1,4 4,5 2,0 2,5 and every array movement to a horizontal or antidiagonal neighbor moves along an edge of this graph, with the array starting at 0.

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 27
6 36
7 27
8 171
9 243
10 216
11 81
12 1089
13 3249
14 2187
15 1296
16 243
17 6939
18 44217
19 61731
20 19683
21 7776
22 729
23 44217
24 609309
25 1795473
26 1172889
27 177147
28 46656
29 2187
30 281763
31 8410671
32 53599905
33 72906921
34 22284891
35 1594323
36 279936
37 6561
38 1795473

List of values

[1, 3, 6, 9, 27, 36, 27, 171, 243, 216, 81, 1089, 3249, 2187, 1296, 243, 6939, 44217, 61731, 19683, 7776, 729, 44217, 609309, 1795473, 1172889, 177147, 46656, 2187, 281763, 8410671, 53599905, 72906921, 22284891, 1594323, 279936, 6561, 1795473]

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

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