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A013141
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sin(tanh(x)+arctan(x))=2*x-12/3!*x^3+232/5!*x^5-8960/7!*x^7...
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0
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2, -12, 232, -8960, 580480, -57192960, 8028368896, -1530617461760, 381866595811328, -120993556601405440, 47505188434021777408, -22644967739703901421568, 12882783407125570011004928
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Sin[Tanh[x]+ArcTan[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, May 11 2018 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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STATUS
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approved
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