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A068269 1/19 the number of colorings of an n X n square array with 19 colors. 1
1, 5526, 8882874018, 4153630571837864748, 564981170863476314096512687566, 22354853275061169487985050625489956484533056, 257300965334378745090532920060644632998190650709754736514068, 861475141050998806961235302195978945049151803599433480523424276423626596675468 (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: A025316 A025289 A025307 * A164079 A278012 A255100

Adjacent sequences:  A068266 A068267 A068268 * A068270 A068271 A068272

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 November 14 04:56 EST 2019. Contains 329110 sequences. (Running on oeis4.)