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%I #5 Mar 31 2012 12:37:06
%S 468,44596,10331386,2839359056,2520131261396
%N Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order
%C Diagonal of A205415
%e Some solutions for n=3
%e ..0..1..1..1..1....0..0..0..0..0....0..0..0..1..0....0..0..1..0..0
%e ..1..1..2..2..1....0..1..2..2..1....2..2..1..1..0....2..1..1..1..0
%e ..1..1..1..2..1....0..2..2..2..2....1..1..1..1..1....1..1..1..2..0
%e ..1..2..2..2..1....0..0..2..1..0....1..0..1..0..0....2..0..1..2..0
%e ..0..0..0..2..1....0..2..2..0..1....2..1..1..2..2....0..0..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 26 2012