A189778 Number of nX8 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally

181, 32761, 5929741, 530389481, 44835555921, 3292640179737, 256681706358532, 19742364192283882, 1563337091301143920, 122856570846133660189, 9713292881930768378666, 764499527960618934733556

Offset

1,1

Comments

Column 8 of A189779

Links

R. H. Hardin, Table of n, a(n) for n = 1..36

Example

Some solutions for 5X8
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..1..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0
..0..1..1..1..0..0..0..0....1..0..1..1..0..0..0..0....0..1..1..0..0..0..0..0
..0..0..0..0..0..0..0..0....0..0..1..0..0..0..0..0....1..1..1..0..0..0..0..0
..0..0..0..0..0..1..1..1....1..1..0..0..0..0..0..1....0..1..1..1..1..1..0..0

Crossrefs

Sequence in context: A179408 A224991 A189342 * A322904 A107075 A228134

Adjacent sequences: A189775 A189776 A189777 * A189779 A189780 A189781

Keyword

nonn

Author

R. H. Hardin Apr 27 2011

Status

approved