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A068279 1/12 the number of colorings of an n X n rhombic hexagonal array with 12 colors. 0
1, 1100, 100001000, 751345249556000 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

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

CROSSREFS

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

Sequence in context: A050926 A083933 A080317 * A178407 A178348 A060519

Adjacent sequences:  A068276 A068277 A068278 * A068280 A068281 A068282

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002

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Last modified February 17 23:46 EST 2012. Contains 206085 sequences.