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A223439
Generalized Petersen graph (8,2) coloring a rectangular array: number of nX7 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 or vertical neighbor moves along an edge of this graph
1
11664, 1180256, 179532768, 33277934848, 6790055219264, 1445484467129440, 313233804577725904, 68373044838570536416, 14968850924351337707600, 3281073242585313313486816, 719543293998612435740651440
OFFSET
1,1
COMMENTS
Column 7 of A223440
LINKS
EXAMPLE
Some solutions for n=3
..8..0..8.14..8.14..8....8..0..8.14.12.10.12....8..0..8.10.12.14..8
..0..8.14..8.10..8.10....0..8.14..8.10.12.14....0..8.10..8.14.12.10
..8..0..8..0..8.10..2....8..0..8.10..8.10..8....8..0..8.14.12.10..8
CROSSREFS
Sequence in context: A352330 A203821 A223598 * A223691 A254770 A254777
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved