A068259 1/9 the number of colorings of an n X n square array with 9 colors.

1, 456, 10556008, 12405232610688, 740083033797732630216, 2241435875640746831506090496496, 344621623364019594715666338046505649098368, 2689856201334666341950387692094152693428585565204907488, 1065825084866806867830786487316472449826266534389338451645760215077416

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Crossrefs

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

Sequence in context: A278433 A278551 A278796 * A036271 A061326 A325086

Adjacent sequences: A068256 A068257 A068258 * A068260 A068261 A068262

Keyword

nonn

Author

R. H. Hardin, Feb 24 2002

Extensions

a(6)-a(9) from Alois P. Heinz, Apr 27 2012

Status

approved