%I #5 Mar 31 2012 12:37:20

%S 26,676,4238,26569,279219,2934369,24999522,212984836,1971051046,

%T 18240933481,163271339451,1461412614321,13258432080828,

%U 120285003372304,1085258011417172,9791619223717321,88545977352385817,800724571304629609

%N Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically

%C Row 6 of A207858

%H R. H. Hardin, <a href="/A207861/b207861.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012