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A013543
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Numerator of the coefficient [x^(2n+1)] of the Taylor series arcsinh(cosec(x) - coth(x)).
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1
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-1, 55, -95, 18167, -22118287, 51054985, -10169116451, 211416785949641, -36975734097804001, 764839113579826244863, -45988950723178614316250507, 61286790868827586032169553, -25771544562210083470157315437
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OFFSET
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0,2
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LINKS
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EXAMPLE
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-x/6 + 55*x^3/1296 - 95*x^5/145152 + 18167*x^7/31352832 - ...
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MATHEMATICA
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Numerator[Take[CoefficientList[Series[ArcSinh[Csc[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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