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%I #5 Mar 31 2012 12:36:09
%S 10,24,24,954,954,194008,194008,196196792,196196792,1031851558448,
%T 1031851558448,27419179198175312,27419179198175312
%N Number of (n+1)X(n+1) 0..1 arrays with the array of 2X2 subblock determinants antisymmetric under horizontal and vertical reflection and each non-centerline 2X2 subblock nonsingular
%C Column 1 of A187633
%e Some solutions for 4X4
%e ..0..1..1..0....1..0..0..1....1..0..0..1....0..1..1..1....1..1..1..0
%e ..1..0..0..1....0..1..1..1....1..1..1..1....1..0..0..1....1..0..0..1
%e ..1..0..0..1....0..1..1..1....1..1..1..1....1..0..0..1....1..0..0..1
%e ..1..1..1..1....1..0..0..1....1..0..0..1....1..1..1..1....0..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 12 2011
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