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 A012190 tanh(arctan(sin(x)))=x-5/3!*x^3+121/5!*x^5-6845/7!*x^7+690481/9!*x^9... 0
 1, -5, 121, -6845, 690481, -108594485, 24502918441, -7495966306925, 2984112329052001, -1498441322462840165, 926096248873419539161, -690670275602276172370205, 611502034169544516212107921 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS EXAMPLE E.g.f.: tanh(arctan(sin(x))), even terms only. [From Harvey P. Dale, Sep 19 2011] MATHEMATICA With[{nn=30}, Take[CoefficientList[Series[Tanh[ArcTan[Sin[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 19 2011 *) CROSSREFS Sequence in context: A179299 A012179 A012026 * A012077 A012046 A012151 Adjacent sequences:  A012187 A012188 A012189 * A012191 A012192 A012193 KEYWORD sign AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) STATUS approved

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Last modified October 23 16:46 EDT 2019. Contains 328373 sequences. (Running on oeis4.)