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A202559
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Number of nX7 0,1 arrays with the row and column sums nondecreasing
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0
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8, 293, 9520, 342295, 12176148, 436020774, 15635171834, 557315843073, 19890838348436, 707996212911950, 25194289287709052
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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=3
..0..1..0..0..1..0..0....0..0..0..0..1..0..0....0..0..1..0..1..0..1
..1..0..0..0..1..1..1....0..0..0..1..0..0..0....0..1..0..1..1..1..0
..0..0..1..1..0..1..1....0..1..1..0..0..1..1....1..1..1..1..0..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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