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A207523
Number of 7Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically
1
42, 1764, 12994, 101233, 991184, 7666319, 54373655, 406281454, 2956097240, 20771578816, 146736632823, 1035899791894, 7243867291833, 50585923578789, 353460807485988, 2464610891088612, 17167716757793554, 119597858516828559
OFFSET
1,1
COMMENTS
Row 7 of A207519
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1....0..1..1..1....1..0..1..1....1..0..1..1....1..1..0..1
..0..0..0..0....1..1..1..1....0..0..0..0....1..1..0..0....1..1..1..0
..0..0..0..0....1..1..1..1....0..0..0..0....1..1..0..0....0..1..1..0
..1..1..1..1....1..1..1..1....0..0..0..0....1..0..1..1....0..1..1..0
..1..1..1..1....1..1..1..1....0..1..1..0....1..0..1..1....0..1..1..1
..0..1..1..1....0..1..1..1....1..1..1..0....1..1..1..0....1..1..0..1
..0..1..1..1....0..1..1..0....1..1..0..0....0..1..1..0....1..1..0..1
CROSSREFS
Sequence in context: A207922 A208702 A207471 * A207258 A207953 A207862
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 18 2012
STATUS
approved