%I #4 Mar 31 2012 12:36:35
%S 6,2539,794416,316561994,117380324984,44832664800117,16925667317073175
%N Number of nX6 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors
%C Column 6 of A199149
%e Some solutions for n=3
%e ..0..1..1..1..1..2....0..0..1..2..3..3....0..1..0..0..2..2....0..0..1..1..1..2
%e ..0..1..0..2..1..2....0..1..1..2..0..3....0..1..1..0..2..2....1..1..3..3..0..2
%e ..0..1..0..2..1..1....0..0..0..0..0..3....0..0..1..3..3..3....1..1..0..0..0..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Nov 03 2011
