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A013552
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Numerator of [x^(2n+1)] of the Taylor series sin(cot(x)-coth(x)).
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1
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-2, 4, -136, 656, -47672, 3091664, -16788784, 15764283616, -3729134588968, 119174509180016, -1148737050343959536, 149765188779100064, -756009870577278864656, 3746439312393916961802272
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OFFSET
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0,1
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LINKS
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EXAMPLE
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-2x/3 +4x^3/81 -136x^5/25515 +656x^7/688905-...
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MATHEMATICA
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Numerator[Take[CoefficientList[Series[Sin[Cot[x] - Coth[x]], {x, 0, 26}], x], {2, -1, 2}]] (* G. C. Greubel, Nov 13 2016 *)
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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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Patrick Demichel (patrick.demichel(AT)hp.com)
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EXTENSIONS
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STATUS
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approved
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