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A012129 tanh(arcsin(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+65681/9!*x^9... 0

%I #6 Jun 23 2022 10:15:39

%S 1,-3,41,-1243,65681,-5335283,616216121,-95919970123,19349625251361,

%T -4909180152449763,1529770153928451401,-574346328696763158203,

%U 255703860384773029976241,-133196988269151890206719443

%N tanh(arcsin(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+65681/9!*x^9...

%t With[{nn=30},Take[CoefficientList[Series[Tanh[ArcSin[Tanh[x]]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Jun 23 2022 *)

%K sign

%O 0,2

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

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Last modified March 29 03:41 EDT 2024. Contains 371264 sequences. (Running on oeis4.)