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A140334
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Triangle read by rows: nonnegative numerators of Bernoulli twin polynomial coefficients on line.
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1
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1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 5, 0, 2, 1, 1, 1, 1, 7, 5, 1, 5, 1, 1, 1, 2, 7, 7, 7, 7, 3, 1, 1, 3, 2, 2, 7, 21, 14, 2, 7, 1, 5, 3, 3, 2, 5, 21, 7, 6, 3, 4, 1
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OFFSET
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0,20
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LINKS
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FORMULA
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First five increasing polynomials:
1;
-1/2, 1;
-1/3, 0, 1;
-1/6, -1/2, 1/2, 1;
-1/30, -1/2, -1/2, 1, 1;
...
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MATHEMATICA
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c[0, x_] = 1; c[n_, x_] := Sum[Binomial[n-1, j-1]*BernoulliB[j, x], {j, 1, n}]; Table[CoefficientList[c[n, x], x], {n, 0, 10}] // Flatten // Abs // Numerator (* Jean-François Alcover, Sep 12 2013 *)
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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