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sinh(arcsin(arctan(x)))=x+4/5!*x^5-32/7!*x^7+1936/9!*x^9-67328/11!*x^11...
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%I #6 Mar 12 2016 14:34:37

%S 1,0,4,-32,1936,-67328,4140096,353591808,-262064131840,

%T 130347373404160,-65058714844462080,36397620373403361280,

%U -23130160076947953643520,16791590408623398030868480

%N sinh(arcsin(arctan(x)))=x+4/5!*x^5-32/7!*x^7+1936/9!*x^9-67328/11!*x^11...

%t With[{nn=30},Take[CoefficientList[Series[Sinh[ArcSin[ArcTan[x]]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Mar 12 2016 *)

%K sign

%O 0,3

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