A189901 Number of nX5 binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally

28, 784, 21952, 372850, 6442436, 101895401, 1518596226, 22333076803, 319934642768, 4537262993168, 63834288477978, 892671848458793, 12444325266903474, 173027620927389879, 2402063580660811510

Offset

1,1

Comments

Column 5 of A189905

Links

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

Example

Some solutions for 4X5
..0..1..0..0..1....0..0..0..0..0....0..0..1..0..1....0..1..0..1..1
..1..0..0..0..1....1..1..1..0..1....1..1..1..1..1....1..1..1..0..1
..0..0..0..1..0....1..0..0..0..0....0..1..1..0..0....1..0..1..1..1
..1..1..1..0..1....1..1..0..0..1....0..0..1..0..1....1..1..1..0..1

Crossrefs

Sequence in context: A224193 A224010 A171302 * A189907 A189339 A189775

Adjacent sequences: A189898 A189899 A189900 * A189902 A189903 A189904

Keyword

nonn

Author

R. H. Hardin May 01 2011

Status

approved