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%I #5 Mar 31 2012 12:37:06
%S 14,550,48401,8952876,3619876639,3232900348158
%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..2 introduced in row major order
%C Diagonal of A205590
%e Some solutions for n=4
%e ..0..1..0..0..2....0..1..1..0..2....0..0..1..1..2....0..0..0..0..0
%e ..0..0..2..1..0....1..2..2..2..2....0..1..2..1..0....1..0..0..2..1
%e ..0..0..0..2..2....1..1..0..2..2....2..1..1..0..0....2..1..0..1..0
%e ..1..1..2..2..2....0..2..1..1..1....0..2..0..0..0....1..1..2..0..0
%e ..2..0..1..0..0....1..0..0..1..1....0..0..1..2..2....1..1..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 29 2012