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Number of nX7 0..3 arrays avoiding the pattern z z+1 z in any row or column
0

%I #4 Mar 31 2012 12:37:15

%S 12793,163660849,1521486186616,13936149462971657,

%T 128293375281298716166,1181661762728423251688762

%N Number of nX7 0..3 arrays avoiding the pattern z z+1 z in any row or column

%C Column 7 of A207134

%e Some solutions for n=4

%e ..2..0..3..3..3..2..3....1..0..0..0..0..3..1....1..0..2..1..0..3..3

%e ..0..0..3..0..3..2..1....2..1..0..1..3..1..3....3..3..3..2..1..3..1

%e ..0..2..2..3..0..0..1....3..1..1..3..0..1..1....3..0..0..2..1..2..0

%e ..0..3..3..3..3..1..3....0..1..1..0..1..1..3....1..0..2..0..1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 15 2012