%I #4 Feb 24 2012 12:50:43
%S 1,0,12,80,13776,566272,127692224,15090459904,4735792068864,
%T 1137376547676160,493601667145247744,198575926723414577152,
%U 116701919243205334355968,69932277446693762007433216
%N arcsin(arctan(arcsin(x)))=x+12/5!*x^5+80/7!*x^7+13776/9!*x^9...
%K nonn
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)