The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #4 Feb 24 2012 12:51:17
%S 2,10,378,40506,8553330,2993345546,1566852695978,1146277553440826,
%T 1116896678593105890,1398153036485073410442,2186625537999184822244826,
%U 4178049614593046484845430458
%N arcsin(sinh(x)+arcsin(x))=2*x+10/3!*x^3+378/5!*x^5+40506/7!*x^7...
%K nonn
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)