%I #5 Mar 31 2012 12:36:36

%S 122,67774,31120632,14399942873,6663970316970,3083761998081891,

%T 1427019666767669979,660357476435139192982,305582323780950052573456,

%U 141409100632588861437301956,65437468685616944338442793185

%N Number of nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors

%C Column 6 of A199655

%H R. H. Hardin, <a href="/A199653/b199653.txt">Table of n, a(n) for n = 1..149</a>

%e Some solutions for n=3

%e ..0..0..0..1..1..0....0..0..0..0..1..0....0..0..0..1..1..0....0..0..0..1..1..0

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 08 2011