A068281 1/14 the number of colorings of an n X n rhombic hexagonal array with 14 colors.

1, 1872, 429983424, 12118236294438144, 41905301129446014898200576, 17780352279236011016040115376770056192, 925664488474756221142848128240158691162017819238400, 5913011057048168843456253932545740404857450278470215562237034528768

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: A270244 A154675 A396310 * 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