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A206988
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Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 1 1 1 vertically
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0
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2, 16, 174, 6510, 516724, 88819714, 37849652838, 36679559167444, 82039130470188394, 429029852979061855882, 5194153238714571994969836, 145816870651378340099973452074
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..1..1..1..1....1..0..1..0....1..0..0..1....1..0..1..0....0..1..0..1
..1..1..0..1....1..1..0..1....0..1..1..0....1..0..0..1....1..1..1..0
..0..0..1..0....0..1..0..0....1..0..1..1....0..1..0..0....0..0..1..0
..1..1..1..0....1..0..1..0....1..1..0..1....0..1..0..0....0..1..0..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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