A184758 - OEIS

%I #5 Mar 31 2012 12:36:01

%S 32,1129,44391,1713803,66363023,2568513843,99419347147,3848174315295,

%T 148949599913987,5765325542821919,223155884726125003,

%U 8637595276083930107,334331547130486255947,12940822049109738429467,500894626143397858765227

%N Half the number of nX6 binary arrays with no 1 having an adjacent 1 both above and to its left

%C Column 6 of A184761

%H R. H. Hardin, <a href="/A184758/b184758.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X6

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2011