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A232775
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Number of (n+1)X(1+1) 0..2 arrays x(i,j) with row sums sum{j*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing
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1
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30, 118, 387, 1175, 3294, 8679, 21991, 53823, 127874, 298046, 682459, 1538297, 3431277, 7577602, 16580065, 36051756, 77908855, 167365984, 358088629, 762995256, 1619108191, 3426195330, 7228924583, 15206904198, 31924025361
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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....0..2....2..0....0..1....0..1....0..0....1..0....1..0....0..0....0..1
..1..1....1..2....2..0....0..1....2..0....0..0....0..1....1..0....0..0....2..0
..2..1....1..2....0..2....2..0....0..1....0..2....2..0....1..1....0..1....0..1
..0..2....1..2....0..2....0..1....2..1....0..2....1..1....1..2....0..1....1..1
..2..1....1..2....0..2....0..1....1..2....2..1....1..2....1..2....0..2....1..1
..0..2....2..2....2..1....1..2....2..2....1..2....1..2....1..2....2..2....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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