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A068265 1/15 the number of colorings of an n X n square array with 15 colors. 1
1, 2562, 1121513134, 83883341208384732, 1071996076636962150571633386, 2340759471154169773945494478241264553960, 873306114650864371018759651512626175923988398193371716, 55670142239312854542084127479622099015674204276236803402441613218850844 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Cf. A068239-A068305, A000332, A002417, A027441, A182368, A182406.

Sequence in context: A125492 A309042 A170794 * A252677 A235882 A156627

Adjacent sequences:  A068262 A068263 A068264 * A068266 A068267 A068268

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2002

EXTENSIONS

a(5)-a(8) from Alois P. Heinz, Apr 27 2012

STATUS

approved

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Last modified June 6 04:15 EDT 2020. Contains 334859 sequences. (Running on oeis4.)