%I #5 Feb 24 2012 12:51:02
%S 2,-152,469152,-4992585600,302439240061440,-25272513424650885120,
%T 8822979791130082266685440,-2618340641057955264580458086400
%N arctan(arcsinh(x)*arcsin(x))=2/2!*x^2-152/6!*x^6+469152/10!*x^10...
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)