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%I #6 Dec 18 2015 18:18:00
%S 3,81,6819,3447649,8779228417,105855104360481,6152504033864688529,
%T 1755834487701036618450529
%N Number of n X n 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal
%C Diagonal of A207228
%e Some solutions for n=4
%e ..2..0..1..2....0..1..2..2....2..0..0..1....0..2..0..0....2..1..0..2
%e ..0..2..2..0....2..2..0..0....1..1..0..2....0..1..2..0....1..2..2..1
%e ..2..2..0..1....0..2..2..0....0..2..1..0....1..0..2..0....1..0..2..0
%e ..2..1..0..2....0..1..1..1....2..2..2..0....1..2..2..2....0..0..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 16 2012
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