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A207180
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Number of nX6 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically
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1
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44, 1936, 44065, 981850, 23471595, 567046841, 13575513917, 324280404464, 7753960008192, 185490886984435, 4436906789153102, 106121193817646599, 2538197480774276123, 60709250545517745427, 1452061508622073819918
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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..0..1..1..1..0....0..0..1..1..1..1....0..0..1..1..0..1....1..1..1..1..1..1
..0..1..0..1..1..0....0..1..0..1..0..1....0..0..1..1..0..0....1..1..1..1..0..1
..0..1..1..1..0..1....1..1..1..0..1..0....1..1..0..0..1..1....1..1..1..1..1..1
..0..0..1..1..1..1....1..0..1..0..1..0....1..1..0..0..1..1....1..1..1..1..1..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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