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exp(arctanh(x)+sinh(x))=1+2*x+4/2!*x^2+11/3!*x^3+40/4!*x^4+177/5!*x^5...
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%I #10 Nov 21 2013 12:46:02

%S 1,2,4,11,40,177,934,5889,42648,354825,3295194,34194349,387494364,

%T 4812801541,64310993478,929134537249,14291172086544,235303563551473,

%U 4092687247885554,75620298761841685,1467156197049970084

%N exp(arctanh(x)+sinh(x))=1+2*x+4/2!*x^2+11/3!*x^3+40/4!*x^4+177/5!*x^5...

%F a(n) ~ 2*exp(sinh(1)) * n^n / exp(n). - _Vaclav Kotesovec_, Oct 24 2013

%t With[{nn=20},CoefficientList[Series[Exp[ArcTanh[x]+Sinh[x]],{x,0,nn}], x]Range[0,nn]!] (* _Harvey P. Dale_, Jan 23 2012 *)

%K nonn

%O 0,2

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