A068262 - OEIS

%I #8 Apr 27 2012 17:30:07

%S 1,1221,151807051,1921891513498671,2477572888040351900883711,

%T 325225549604893753518411953062063971,

%U 4347138911747232969546330930965884363451764385131,5916747359191672857470732990313720758880725307188900212460107911

%N 1/12 the number of colorings of an n X n square array with 12 colors.

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 24 2002

%E a(5)-a(8) from _Alois P. Heinz_, Apr 27 2012