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A223614
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Number of n X n 0..1 arrays with rows and columns unimodal
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0
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2, 16, 240, 4466, 89630, 1856100, 39162020, 840122330, 18350758538, 409124396540, 9333564282142, 218396645933584, 5252293916506694
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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..0..0....0..1..0..0....0..0..0..0....1..0..0..0....0..1..1..0
..1..1..0..0....1..1..0..0....0..1..0..0....1..1..0..0....0..1..1..0
..1..1..0..0....0..1..0..0....0..1..1..0....1..1..1..1....0..1..1..0
..0..0..0..1....0..0..1..1....0..1..1..0....1..1..1..0....0..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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