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%I #4 Mar 31 2012 12:36:09
%S 954,557382,31903442,686589106,7836968262
%N Number of 5X5 0..n arrays with the array of 2X2 subblock determinants antisymmetric under horizontal and vertical reflection and each non-centerline 2X2 subblock nonsingular
%C Row 4 of A187633
%e Some n=3 solutions for 5X5
%e ..2..0..2..1..2....2..0..2..1..2....2..0..2..3..2....2..0..2..0..2
%e ..0..1..0..1..0....0..3..0..3..0....0..2..0..2..0....0..2..2..2..2
%e ..1..2..3..1..1....3..0..2..0..3....2..2..1..1..2....3..0..1..0..3
%e ..0..1..0..1..0....0..3..1..3..1....0..2..0..2..0....0..2..0..2..2
%e ..2..1..2..0..2....2..3..3..3..3....2..0..2..3..2....2..0..2..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 12 2011
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