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A223623
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Number of nX5 0..1 arrays with row sums nondecreasing and column sums unimodal
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1
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16, 260, 3560, 45580, 557432, 6555965, 75329449, 847768800, 9404270528, 103171727760, 1121204732884, 12097458097201, 129682860664008, 1382943677857229, 14683008908944181, 155278885548939860
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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..0....0..1..0..0..0....0..0..0..1..0....1..1..0..0..0
..0..1..0..0..1....1..1..0..0..0....0..1..1..0..0....0..1..1..1..0
..1..1..1..1..0....0..0..1..1..1....1..1..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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