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A202557
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Number of nX5 0,1 arrays with the row and column sums nondecreasing
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1
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6, 73, 824, 9325, 103806, 1126437, 12176148, 130217215, 1384437590, 14638759530, 153859811582, 1612968122563, 16850540584514, 175613681682972, 1826081927556004, 18940152569016323, 196169872012941802
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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
..0..0..0..1..1....0..0..0..0..1....0..0..0..1..1....0..0..0..1..1
..1..1..0..0..0....0..1..1..0..0....1..0..0..1..1....0..1..0..1..1
..0..1..1..0..0....1..0..0..0..1....1..1..1..0..0....1..0..1..1..0
..1..0..1..1..1....0..0..0..1..1....0..1..1..1..1....1..1..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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