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%I #4 Dec 18 2015 18:17:14
%S 0,20,17226,8194791,1995724092,51267367432
%N Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 13 and every element equal to at least one neighbor.
%K nonn
%O 3,2
%A _R. H. Hardin_ Apr 14 2009
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