A189159 Number of nX7 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.

96, 9216, 884736, 48460966, 2710884810, 139543984265, 6787471566616, 327166323321331, 15463232072168424, 725494470365730502, 33890063050246876236, 1577540791665774040985, 73320840584238660162738

Offset

1,1

Comments

Column 7 of A189161

Links

R. H. Hardin, Table of n, a(n) for n = 1..145

Example

Some solutions for 4X7
..0..0..0..0..0..0..1....0..0..1..0..1..1..1....0..0..1..0..0..0..1
..0..0..0..1..0..0..0....0..0..1..0..1..0..0....0..0..1..0..1..0..0
..0..0..0..0..1..0..0....0..0..0..0..1..0..1....0..0..0..0..1..0..1
..0..0..0..1..0..0..0....0..1..1..0..1..0..0....0..0..1..0..0..0..1

Crossrefs

Sequence in context: A000545 A189909 A189903 * A254286 A216039 A382779

Adjacent sequences: A189156 A189157 A189158 * A189160 A189161 A189162

Keyword

nonn

Author

R. H. Hardin, Apr 17 2011

Status

approved