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A232856
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Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing
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1
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25, 130, 650, 2942, 11445, 37040, 101369, 257799, 633068, 1515898, 3535659, 7923813, 16924203, 34435189, 67351417, 127875041, 237092930, 430410822, 764368249, 1325374142, 2247755925, 3735891528, 6105155090, 9831802225
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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
..1..0..0..0....1..0..1..0....0..1..0..0....1..1..0..0....0..0..1..0
..1..0..0..1....1..0..1..0....1..0..1..0....0..0..1..1....1..0..1..0
..1..0..1..1....0..0..0..1....0..0..0..1....1..0..1..1....1..1..0..1
..1..0..1..1....0..1..0..1....1..0..0..1....0..1..1..1....0..0..1..1
..0..1..1..1....0..1..0..1....0..0..1..1....0..1..1..1....1..0..1..1
..0..1..1..1....0..0..1..1....0..1..1..1....0..1..1..1....0..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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