A189342 Number of nX8 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally

181, 32761, 5929741, 442969881, 31177656076, 1732402041622, 106150557957909, 6190300153637745

Offset

1,1

Comments

Column 8 of A189343

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for 4X8
..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1....0..0..0..0..0..1..0..1
..0..0..0..0..0..1..0..1....0..0..0..0..1..1..1..1....0..0..0..0..1..0..1..1
..0..0..0..1..0..0..0..0....0..0..0..0..0..1..1..1....0..0..0..1..0..1..0..1
..0..0..0..1..0..0..0..0....0..0..0..1..1..0..1..0....0..0..0..0..1..1..1..0

Crossrefs

Sequence in context: A083979 A179408 A224991 * A189778 A322904 A107075

Adjacent sequences: A189339 A189340 A189341 * A189343 A189344 A189345

Keyword

nonn

Author

R. H. Hardin Apr 20 2011

Status

approved