A223249 - cp's OEIS frontend

A223249 Two-loop graph coloring a rectangular array: number of n X 2 0..4 arrays where 0..4 label nodes of a graph with edges 0,1 1,2 2,0 0,3 3,4 4,0 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph.

n	a(n)
1	12
2	52
3	236
4	1076
5	4908
6	22388
7	102124
8	465844
9	2124972
10	9693172
11	44215916
12	201693236
13	920034348
14	4196785268
15	19143857644
16	87325717684
17	398340873132
18	1817052930292
19	8288582905196
20	37808808665396
21	172466877516588

[12, 52, 236, 1076, 4908, 22388, 102124, 465844, 2124972, 9693172, 44215916, 201693236, 920034348, 4196785268, 19143857644, 87325717684, 398340873132, 1817052930292, 8288582905196, 37808808665396, 172466877516588]

cp's OEIS Frontend

A223249 Two-loop graph coloring a rectangular array: number of n X 2 0..4 arrays where 0..4 label nodes of a graph with edges 0,1 1,2 2,0 0,3 3,4 4,0 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph.

Table of values

List of values