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arcsinh(arcsin(x)+sin(x))=2*x-8/3!*x^3+298/5!*x^5-29416/7!*x^7...
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%I #6 Oct 13 2013 18:21:54

%S 2,-8,298,-29416,5805010,-1886608616,917162117818,-622654532107336,

%T 562865488506452130,-653565528977071759176,947976470998802461571146,

%U -1679754223193478305467460648,3570405336414257223991774221426

%N arcsinh(arcsin(x)+sin(x))=2*x-8/3!*x^3+298/5!*x^5-29416/7!*x^7...

%t With[{nn=30},Take[CoefficientList[Series[ArcSinh[ArcSin[x]+Sin[x]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Oct 13 2013 *)

%K sign

%O 0,1

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