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A068284 1/5 the number of colorings of an n X n staggered hexagonal array with 5 colors. 1
1, 36, 6588, 6169500, 29609340804, 728465439240612, 91873868538291559236, 59398217444060775978706980, 196856852524443536659406407297548 (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
CROSSREFS
Sequence in context: A268554 A326999 A068272 * A145248 A222974 A013739
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2002
EXTENSIONS
a(8)-a(9) from Alois P. Heinz, May 03 2012
STATUS
approved

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Last modified March 28 13:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)