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A012056 sinh(sin(arctanh(x)))=x+2/3!*x^3+16/5!*x^5+216/7!*x^7-1280/9!*x^9... 0

%I

%S 1,2,16,216,-1280,-1141504,-263392128,-64804059904,-18858549039104,

%T -6592583427379200,-2757743938862710784,-1367930584522073079808,

%U -796483574916192660455424,-539009967859883250211815424

%N sinh(sin(arctanh(x)))=x+2/3!*x^3+16/5!*x^5+216/7!*x^7-1280/9!*x^9...

%t With[{nn=30},Take[CoefficientList[Series[Sinh[Sin[ArcTanh[x]]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Apr 29 2018 *)

%K sign

%O 0,2

%A Patrick Demichel (patrick.demichel(AT)hp.com)

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Last modified January 16 05:22 EST 2022. Contains 350374 sequences. (Running on oeis4.)