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A068296 1/7 the number of colorings of an n X n octagonal array with 7 colors. 0
1, 120, 161280, 2451486720, 421421199390720 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

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

Sequence in context: A008978 A077692 A184127 * A123380 A172805 A008701

Adjacent sequences:  A068293 A068294 A068295 * A068297 A068298 A068299

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.