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Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 7 and every element equal to at least one neighbor.
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%I #4 Dec 18 2015 18:17:14

%S 0,48,281740,6164286,36452297,137540680,403558893

%N Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 7 and every element equal to at least one neighbor.

%K nonn

%O 5,2

%A _R. H. Hardin_ Apr 14 2009