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%I #6 Dec 18 2015 18:17:54
%S 0,3,112,29229,32177372,176701683386,4539946639286136
%N Number of n X n 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors
%C Diagonal of A199647
%e Some solutions for n=3
%e ..0..1..1....0..0..1....0..1..1....0..0..0....0..0..1....0..0..1....0..1..1
%e ..0..1..0....1..0..1....0..0..1....0..1..2....0..1..1....0..2..1....0..2..1
%e ..2..2..0....1..2..2....2..2..1....1..1..2....0..0..0....0..2..1....0..2..2
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 08 2011
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