A189904 Number of nX8 binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally

177, 31329, 5545233, 395408137, 30880712109, 1951128590287, 111638761715758, 6207537762978575, 323783296887093516, 16672434688261743849, 837559653906404095478, 41615651706032541197843

Offset

1,1

Comments

Column 8 of A189905

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A173375 A069398 A189910 * A189160 A053018 A046436

Adjacent sequences: A189901 A189902 A189903 * A189905 A189906 A189907

Keyword

nonn

Author

R. H. Hardin May 01 2011

Status

approved