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%I #6 Dec 18 2015 18:18:00
%S 3,81,11092,7598355,31208037240,729358354663001,92792498733436652359
%N Number of n X n 0..2 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal
%C Diagonal of A206863
%e Some solutions for n=4
%e ..0..2..2..2....2..0..1..2....0..2..2..0....0..2..0..1....2..2..2..1
%e ..1..1..0..2....0..2..2..0....1..0..0..0....2..0..1..1....2..1..0..2
%e ..2..0..1..1....2..2..0..1....2..2..1..2....0..2..1..1....2..0..0..2
%e ..2..2..1..2....2..1..2..2....0..1..2..2....2..0..0..1....1..0..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 13 2012