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A068302 1/13 the number of colorings of an n X n octagonal array with 13 colors. 0
1, 1320, 146520000, 1368698694000000 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

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

Sequence in context: A161586 A013641 A092088 * A139666 A186469 A145754

Adjacent sequences:  A068299 A068300 A068301 * A068303 A068304 A068305

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 12:15 EST 2012. Contains 205909 sequences.