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A068262 1/12 the number of colorings of an n X n square array with 12 colors. 1
1, 1221, 151807051, 1921891513498671, 2477572888040351900883711, 325225549604893753518411953062063971, 4347138911747232969546330930965884363451764385131, 5916747359191672857470732990313720758880725307188900212460107911 (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: A179140 A091790 A053655 * A328991 A223118 A128655

Adjacent sequences:  A068259 A068260 A068261 * A068263 A068264 A068265

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 March 28 03:39 EDT 2020. Contains 333073 sequences. (Running on oeis4.)