A013141 - OEIS

%I #6 May 11 2018 13:57:05

%S 2,-12,232,-8960,580480,-57192960,8028368896,-1530617461760,

%T 381866595811328,-120993556601405440,47505188434021777408,

%U -22644967739703901421568,12882783407125570011004928

%N sin(tanh(x)+arctan(x))=2*x-12/3!*x^3+232/5!*x^5-8960/7!*x^7...

%t 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 *)

%K sign

%O 0,1

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