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A068281 1/14 the number of colorings of an n X n rhombic hexagonal array with 14 colors. 1
1, 1872, 429983424, 12118236294438144, 41905301129446014898200576, 17780352279236011016040115376770056192, 925664488474756221142848128240158691162017819238400, 5913011057048168843456253932545740404857450278470215562237034528768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Cf. A068239-A068305, A000332, A002417, A027441, A212162, A212163.

Sequence in context: A054817 A270244 A154675 * A139668 A244019 A054818

Adjacent sequences:  A068278 A068279 A068280 * A068282 A068283 A068284

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2002

EXTENSIONS

a(5)-a(8) from Alois P. Heinz, May 02 2012

STATUS

approved

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Last modified August 21 23:01 EDT 2019. Contains 326169 sequences. (Running on oeis4.)