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%I #5 Mar 31 2012 12:36:04
%S 81,7686,3090564,5108761008,35143110551556,1006890732907711236,
%T 120347170141816347874560,60068131623385389414240300432
%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace
%C Diagonal of A186141
%e Some solutions for 3X3
%e ..2..1..1....1..1..2....0..2..0....1..2..0....1..0..0....1..2..0....2..0..2
%e ..0..2..0....2..1..0....0..2..1....2..2..0....0..2..2....0..1..1....2..1..2
%e ..0..0..1....2..2..1....0..1..2....2..2..1....1..0..2....1..0..1....0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 13 2011