%I #3 Mar 31 2012 12:35:07
%S 55,475,1807,4627,22075,67603,156763,647467
%N One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 3.
%K nonn
%O 3,1
%A _R. H. Hardin_, Sep 30 2008
