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One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 4.
0

%I #3 Mar 31 2012 12:35:07

%S 165,2401,13757,48057,345885,1519377

%N One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 4.

%K nonn

%O 3,1

%A _R. H. Hardin_, Sep 30 2008