|
%I #4 Mar 31 2012 12:37:18
%S 2902,8421604,14111752738,26097329476130,47621224240269788,
%T 87012971830189045874
%N Number of nX6 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column
%C Column 6 of A207535
%e Some solutions for n=4
%e ..2..2..1..0..0..3....2..2..0..1..2..3....0..1..1..3..2..2....3..1..3..0..1..1
%e ..0..0..1..1..1..3....2..0..1..2..2..1....1..2..2..1..3..2....1..3..2..0..1..3
%e ..3..3..2..1..1..2....1..0..2..2..3..3....1..3..3..0..1..3....2..2..1..1..3..2
%e ..1..1..3..1..0..0....1..2..0..2..3..1....2..1..1..2..2..1....0..1..1..3..3..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 18 2012
| 