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A189907
Number of 5Xn binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally
1
28, 784, 21952, 377517, 6442436, 109264923, 1841998924, 30880712109, 513953862828, 8524935994485, 141100741163866, 2331559436006836, 38495167111404534, 635205147205219239, 10477659617370128080
OFFSET
1,1
COMMENTS
Row 5 of A189905
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin May 01 2011
STATUS
approved