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%I #4 Feb 24 2012 12:50:44
%S 1,1,1,-2,-11,24,349,-664,-22007,28416,2312601,-942336,-365164227,
%T -260697984,80916522933,165900454656,-23968582079343,-85943912448000,
%U 9151870592718513,48584004553543680,-4378918837383018747
%N exp(arctan(arcsinh(x)))=1+x+1/2!*x^2-2/3!*x^3-11/4!*x^4+24/5!*x^5...
%K sign
%O 0,4
%A Patrick Demichel (patrick.demichel(AT)hp.com)