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A255505
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Numerator of Bernoulli(2n)/(2n!).
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4
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1, 1, -1, 1, -1, 1, -691, 1, -3617, 43867, -174611, 77683, -236364091, 657931, -3392780147, 1723168255201, -7709321041217, 151628697551, -26315271553053477373, 154210205991661, -261082718496449122051, 1520097643918070802691
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OFFSET
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0,7
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COMMENTS
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LINKS
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EXAMPLE
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The sequence Bernoulli(2n)/(2n!) (n >= 0) begins 1/2, 1/12, -1/120, 1/504, -1/1440, 1/3168, -691/3931200, 1/8640, -3617/41126400, ...
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MATHEMATICA
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Table[Numerator[BernoulliB[2 n]/(2 n!)], {n, 0, 25}]
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PROG
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(Magma) [Numerator(Bernoulli(2*n)/(2*Factorial(n))):n in [0..30]]; // Vincenzo Librandi, Feb 24 2015
(PARI) a(n) = numerator(bernfrac(2*n)/(2*n!)); \\ Michel Marcus, Feb 24 2015
(Sage) [numerator(bernoulli(2*n)/(2*factorial(n))) for n in (0..25)] # Bruno Berselli, Feb 24 2015
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CROSSREFS
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KEYWORD
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sign,frac
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AUTHOR
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STATUS
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approved
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