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A223341 5X5X5 triangular graph coloring a rectangular array: number of nX5 0..14 arrays where 0..14 label nodes of a graph with edges 0,1 0,2 1,2 1,3 1,4 2,4 3,4 2,5 4,5 3,6 3,7 4,7 6,7 4,8 5,8 7,8 5,9 8,9 6,10 6,11 7,11 10,11 7,12 8,12 11,12 11,12 8,13 9,13 12,13 9,14 13,14 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph 1
5280, 840456, 161370036, 32292951660, 6584672294340, 1348575549617448, 277054255741556856, 56940259467203183256, 11710070305971166272660, 2408151234905842137832152, 495314429698860436138291212 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A223344

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..3..7..8..5..4....3..7.12..7..6....3..7..3..4..1....3..4..7..6.11

..7..8..5..9..5....7..8..7.12..7....7..3..4..3..4....7..8..4..7..6

..3..4..2..5..4....3..4..3..7.12....3..4..3..4..3....3..4..5..4..7

CROSSREFS

Sequence in context: A223494 A265985 A234994 * A270798 A237002 A178027

Adjacent sequences:  A223338 A223339 A223340 * A223342 A223343 A223344

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2013

STATUS

approved

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Last modified February 25 19:39 EST 2021. Contains 341618 sequences. (Running on oeis4.)