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A233059
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Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..2+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing
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1
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13, 47, 161, 564, 1933, 6529, 21904, 72710, 238992, 781279, 2537019, 8187471, 26318697, 84221878, 268396362, 852861982, 2701532776, 8532060967, 26887756403, 84535960052, 265197189246, 830543999898, 2596441897488, 8103132791812
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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=5
..0..0..1....0..0..1....0..0..0....0..1..0....0..0..0....0..0..1....0..1..0
..0..0..1....1..0..1....0..0..0....1..0..0....1..1..0....0..0..1....1..0..0
..1..1..0....1..0..1....1..0..0....0..1..1....0..1..1....0..1..0....0..1..1
..1..1..0....1..1..0....0..0..1....0..1..1....1..0..1....1..0..1....1..0..1
..1..0..1....0..1..1....0..1..1....1..1..0....1..0..1....0..1..1....0..1..1
..0..1..1....1..1..1....1..1..1....1..0..1....0..1..1....0..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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