%I #4 Feb 24 2012 12:50:39
%S 1,1,1,2,5,16,61,216,937,-1280,-34919,-1141504,-13257619,-263392128,
%T -3269873515,-64804059904,-890367567919,-18858549039104,
%U -286428853272143,-6592583427379200,-109915623105978539
%N exp(sin(arctanh(x)))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+16/5!*x^5...
%K sign
%O 0,4
%A Patrick Demichel (patrick.demichel(AT)hp.com)