A206576 - OEIS

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

%S 12747,162486009,1211164182464,8882668617521828,64829265966214645776,

%T 473233846073429226663536

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

%C Column 7 of A206577

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 09 2012