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%I #5 Mar 31 2012 12:35:56
%S 32,204,1052,5802,29432,159318,829724,4552710
%N 1/8 the number of (n+1)X(n+1) 0..3 arrays with all 2X2 subblock sums the same
%C Diagonal of A184029
%e Some solutions for 4X4
%e ..2..3..3..2....3..0..3..1....2..3..3..2....1..1..1..1....2..2..2..1
%e ..2..2..1..3....1..1..1..0....2..0..1..1....2..1..2..1....3..2..3..3
%e ..2..3..3..2....3..0..3..1....2..3..3..2....0..2..0..2....2..2..2..1
%e ..3..1..2..2....1..1..1..0....2..0..1..1....2..1..2..1....3..2..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 08 2011
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