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A068298 1/9 the number of colorings of an n X n octagonal array with 9 colors. 0
1, 336, 3120768, 803828696832, 5741675134355623680 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

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

Sequence in context: A184557 A056933 A008693 * A003790 A003924 A153164

Adjacent sequences:  A068295 A068296 A068297 * A068299 A068300 A068301

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.