A184760 Half the number of nX8 binary arrays with no 1 having an adjacent 1 both above and to its left

128, 14321, 1865917, 236878817, 30202770902, 3848174315295, 490358739919898, 62483420093901107, 7961905153672004774, 1014539579452170241886, 129276927715415033559253, 16473013159661022852279611

Offset

1,1

Comments

Column 8 of A184761

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X8
..0..0..1..0..0..0..0..1....0..0..0..0..1..0..0..1....0..0..0..1..1..0..1..1
..0..0..0..0..0..0..0..1....0..0..0..1..0..0..0..1....0..0..0..0..0..0..1..0
..0..0..1..1..1..1..0..0....0..0..0..0..0..0..1..0....0..0..1..1..0..0..1..1

Crossrefs

Sequence in context: A239190 A283856 A283414 * A228985 A282315 A093532

Adjacent sequences: A184757 A184758 A184759 * A184761 A184762 A184763

Keyword

nonn

Author

R. H. Hardin Jan 21 2011

Status

approved