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%I
%S 4,256,147006,1066263778,89061782573052,87012971830189045874
%N Number of n X n 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column
%C Diagonal of A207535
%e Some solutions for n=4
%e ..0..0..1..2....1..0..0..0....3..2..2..1....3..1..1..1....1..3..2..1
%e ..0..3..3..0....0..3..1..2....1..2..2..0....3..3..3..1....1..2..2..1
%e ..1..0..2..2....2..0..1..3....1..3..1..3....3..1..3..3....0..2..0..3
%e ..1..1..0..0....1..3..3..1....1..0..3..3....3..1..1..1....0..0..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 18 2012
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