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A188560
Number of n X n binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally
1
2, 16, 247, 13306, 2109386, 924245906, 1199747927824, 4515869742994831, 49132225919211100127, 1553292806575822383425281, 142435222420745509758550159896, 37880215295994989398957106920807127
OFFSET
1,1
COMMENTS
Diagonal of A188567
LINKS
EXAMPLE
Some solutions for 3X3
..0..0..0....0..0..1....0..1..1....0..1..1....0..1..0....0..1..1....0..0..1
..1..0..1....0..1..0....0..1..0....1..0..0....0..1..1....0..0..0....1..0..1
..1..0..1....1..0..0....0..0..0....0..1..0....0..0..0....0..0..1....1..1..0
CROSSREFS
Sequence in context: A217815 A192325 A009233 * A012462 A012457 A138764
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 04 2011
STATUS
approved