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%I #4 Dec 18 2015 18:17:19
%S 2,5,10,20,38,74,142,278,542,1070,2110,4190,8318,16574,33022,65918,
%T 131582,262910,525310,1050110,2099198,4197374,8392702,16783358,
%U 33562622,67121150,134234110
%N 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 31
%C Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 9
%C Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 13
%C Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 19
%K nonn
%O 2,1
%A _R. H. Hardin_ Apr 06 2009
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