A207056 - OEIS

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

%S 12747,162486009,1505319709390,13734678041147631,

%T 125023718189363499045,1137807775272657922493117,

%U 10355292626528629423108103805

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

%C Column 7 of A207057

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 14 2012