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%I #4 Mar 31 2012 12:36:08
%S 2,354,4200,34776,107990,475370,978568,2790760,5647886,11787078,
%T 17703910,41527872,57261832
%N Number of 4X4 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero
%C Row 3 of A187521
%e Some solutions for 4X4
%e ..2..2..1..1....2..3..1..2....1..3..1..3....2..2..3..3....1..1..0..3
%e ..1..1..1..0....2..3..2..1....1..3..2..2....1..1..1..2....1..1..2..1
%e ..2..1..1..1....3..3..2..2....2..3..2..1....0..1..1..0....3..1..2..3
%e ..3..2..1..1....0..1..0..0....0..2..2..1....3..1..3..0....0..2..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 10 2011
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