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A188740
Number of n X n binary arrays without the pattern 1 1 1 diagonally, vertically or antidiagonally
0
2, 16, 292, 17286, 3283906, 1536573216, 2307086087740, 10143499802360135, 123466985032906186049, 4528058434298770108386326, 481947777827695507476795332215, 147455854241909275954639647341005231
OFFSET
1,1
COMMENTS
Diagonal of A188747
EXAMPLE
Some solutions for 3X3
..0..0..0....0..1..1....0..0..0....0..0..0....1..0..0....0..1..0....1..0..0
..1..0..0....1..0..0....0..1..1....1..1..1....0..1..1....0..0..0....0..0..0
..0..0..0....1..0..0....1..1..1....0..0..0....0..0..0....0..1..0....1..1..1
CROSSREFS
Sequence in context: A223664 A189611 A189689 * A259647 A188985 A362734
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 09 2011
STATUS
approved