%I #4 Feb 24 2012 12:51:28
%S 2,0,450,2240,1786050,30888000,36926539650,1356752592000,
%T 2425187135621250,154415644664112000,389167059569139101250,
%U 38253175174710405000000,129492439672113021377981250
%N arcsin(arcsin(x)-arcsinh(x))=2/3!*x^3+450/7!*x^7+2240/9!*x^9...
%K nonn
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)