A013424 - OEIS

%I #6 Oct 14 2022 16:27:37

%S 3,-7,497,-12031,1828937,-78420175,33163987313,-1847431936639,

%T 1836279812106137,-90066800149588687,250185010809212552449,

%U -1037398294518312251519,71571989564012181483901417

%N arctan(arcsin(x)-tanh(x))=3/3!*x^3-7/5!*x^5+497/7!*x^7-12031/9!*x^9...

%t With[{nn=30},Take[CoefficientList[Series[ArcTan[ArcSin[x]-Tanh[x]],{x,0,nn}],x] Range[ 0,nn-1]!,{4,-1,2}]] (* _Harvey P. Dale_, Oct 14 2022 *)

%K sign

%O 0,1

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