A012540 - OEIS

%I #6 Apr 18 2022 17:43:04

%S 2,8,-160,-11072,-182912,50245120,7608017664,26249146368,

%T -262793796747264,-58964881233854464,7005062900187299840,

%U 9928554014089367257088,2780197098515017535389696

%N tanh(sinh(x)*arcsin(x))=2/2!*x^2+8/4!*x^4-160/6!*x^6-11072/8!*x^8...

%t With[{nn=30},Take[CoefficientList[Series[Tanh[Sinh[x]ArcSin[x]],{x,0,nn}],x] Range[ 0,nn]!,{3,-1,2}]] (* _Harvey P. Dale_, Apr 18 2022 *)

%K sign

%O 0,1

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