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 A223604 Petersen graph (8,2) coloring a rectangular array: number of 6Xn 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 1
 16777216, 217600, 21308000, 982848688, 77164934624, 5493636282928, 430525083804688, 33412125075233264, 2632417918238601216, 207242362758169075664, 16354092687858619453040, 1290529367734515426273264 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A223599 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=3 ..0..8..0....0..8..0....0..8..0....0..8..0....0..8..0....0..8..0....0..8..0 ..0..1..0...10..8.10...10..8.14....0..1..0...10..8.10....0..8.14....0..1..0 ..9..1..2...14..8.10...14..8..0....0..7..0...10..8.10...14..8.14....2..1..9 ..2..1..9...10..8.10....0..8.10...15..7..6....0..8..0....0..8.14....0..1..0 ..2..1..0....0..8..0...10..8.10...15..7.15....0..8.14...10..8.10....2..1..9 ..2..1..2...14..8..0....0..8.10....6..7..0....0..8..0....0..8.10....0..1..9 CROSSREFS Sequence in context: A326706 A011574 A022540 * A223697 A057070 A067494 Adjacent sequences: A223601 A223602 A223603 * A223605 A223606 A223607 KEYWORD nonn AUTHOR R. H. Hardin Mar 23 2013 STATUS approved

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Last modified September 16 17:53 EDT 2024. Contains 375976 sequences. (Running on oeis4.)