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1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 31
0

%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