%I #4 Feb 24 2012 12:50:53
%S 2,-4,230,-7880,922378,-104579660,22872643950,-5494080273552,
%T 1980593407445778,-817099673512164244,445251089168585478902,
%U -279905701143388803184984,216483300093818109473976346
%N arcsin(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4+230/6!*x^6-7880/8!*x^8...
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)