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A189157
Number of n X 5 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.
1
28, 784, 21952, 424401, 8210464, 151889331, 2710884810, 48083827685, 844714479714, 14772128520081, 257802672361640, 4491710608316816, 78198928468727304, 1360792591701114315, 23673324742422186018
OFFSET
1,1
COMMENTS
Column 5 of A189161.
LINKS
EXAMPLE
Some solutions for 4 X 5
..0..1..0..1..0....0..0..1..0..1....0..1..0..0..1....0..0..0..0..1
..0..0..1..0..0....1..0..1..0..1....1..1..1..1..1....1..1..1..0..0
..0..1..0..0..1....0..0..1..0..1....0..1..1..0..1....0..1..0..1..1
..1..1..1..0..0....0..1..0..0..0....0..1..1..0..0....1..1..0..0..1
CROSSREFS
Cf. A189161.
Sequence in context: A189907 A189339 A189775 * A267732 A009972 A114037
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 17 2011
STATUS
approved