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A223498 Petersen graph (3,1) coloring a rectangular array: number of n X n 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, diagonal or antidiagonal neighbor moves along an edge of this graph, with the array starting at 0. 0
1, 19, 1519, 426359, 515473927, 2519813048575, 51596648899152901, 4382197669772597921079, 1555039484181265199709474223, 2303272223887812126256525632339813 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A223504.
LINKS
EXAMPLE
Some solutions for n=3
..0..3..0....0..2..5....0..3..0....0..2..1....0..1..0....0..1..0....0..2..0
..0..2..0....0..3..0....4..1..4....0..2..1....4..1..4....2..1..0....5..3..0
..0..2..5....0..3..0....2..5..2....0..2..5....4..3..4....0..1..0....0..3..5
CROSSREFS
Cf. A223504.
Sequence in context: A051847 A217830 A002115 * A352465 A054949 A242564
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 21 2013
STATUS
approved

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Last modified April 23 19:56 EDT 2024. Contains 371916 sequences. (Running on oeis4.)