A189907 Number of 5Xn binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally

28, 784, 21952, 377517, 6442436, 109264923, 1841998924, 30880712109, 513953862828, 8524935994485, 141100741163866, 2331559436006836, 38495167111404534, 635205147205219239, 10477659617370128080

Offset

1,1

Comments

Row 5 of A189905

Links

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

Example

Some solutions for 5X4
..0..0..0..0....0..0..0..0....0..1..0..1....0..1..0..0....0..1..0..1
..1..0..0..1....1..0..1..1....1..0..1..0....1..0..0..1....1..1..0..0
..1..0..1..0....0..1..0..1....1..1..0..1....0..0..0..0....0..1..0..0
..0..0..0..0....0..0..1..0....0..0..0..1....0..1..0..0....1..0..0..1
..1..0..1..0....0..0..0..0....1..0..1..1....1..0..0..0....1..0..0..0

Crossrefs

Sequence in context: A224010 A171302 A189901 * A189339 A189775 A189157

Adjacent sequences: A189904 A189905 A189906 * A189908 A189909 A189910

Keyword

nonn

Author

R. H. Hardin May 01 2011

Status

approved