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A013428 sec(arcsin(x)-tanh(x))=1+90/6!*x^6-1176/8!*x^8+185094/10!*x^10... 0

%I

%S 1,0,0,90,-1176,185094,5520372,1212373162,360563171248,54782671966798,

%T 28420007004983564,9501613654091931218,4976784878396711868488,

%U 2978748297366502676647350

%N sec(arcsin(x)-tanh(x))=1+90/6!*x^6-1176/8!*x^8+185094/10!*x^10...

%t With[{nn=30},Take[CoefficientList[Series[Sec[ArcSin[x]-Tanh[x]],{x,0,nn}],x] Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, May 17 2013 *)

%K sign

%O 0,4

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

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Last modified May 26 11:30 EDT 2022. Contains 354086 sequences. (Running on oeis4.)