%I #5 Mar 31 2012 12:36:09
%S 16,174,3698,161571,13555195,2287444987,755272970945,491415809239410,
%T 627561470269866658,1574769693877593164368
%N Number of (n+1)X(n+1) binary arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors
%C Diagonal of A187729
%e Some solutions for 3X3
%e ..0..0..1....1..0..1....1..0..1....0..1..1....1..1..1....1..0..0....1..1..1
%e ..1..1..1....1..1..0....1..1..0....0..1..0....0..0..1....1..0..1....0..1..0
%e ..0..1..0....1..1..0....1..1..1....1..1..1....1..0..1....1..1..0....1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 13 2011
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