%I #4 Dec 18 2015 18:17:22
%S 6,421,520017,13111482259,7470491620551006,103937249022030445057526
%N Number of n X n 0..5 arrays with rows and columns, considered as 6-ary numbers, in nondecreasing order
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009