A184760 - OEIS

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

%S 128,14321,1865917,236878817,30202770902,3848174315295,

%T 490358739919898,62483420093901107,7961905153672004774,

%U 1014539579452170241886,129276927715415033559253,16473013159661022852279611

%N Half the number of nX8 binary arrays with no 1 having an adjacent 1 both above and to its left

%C Column 8 of A184761

%H R. H. Hardin, <a href="/A184760/b184760.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X8

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2011