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A233120
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Number of (3+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..3+1} nondecreasing
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1
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464, 11741, 252958, 4736663, 79223727, 1206772195, 16999415895, 224076967817, 2789987429279, 33062492784645, 375228791717746, 4099407920673301, 43300262048665772, 443810526543291788, 4427981986413355672
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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=2
..0..1..0....0..2..0....0..0..0....0..1..2....1..0..1....0..0..2....1..0..2
..1..0..1....0..1..1....0..2..1....1..1..1....2..2..0....2..2..1....2..1..0
..1..0..2....2..0..2....2..0..1....0..1..2....1..1..2....1..2..2....2..1..1
..1..2..1....1..2..2....1..2..2....2..1..0....0..2..2....1..2..2....0..2..2
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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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