%I #4 Feb 24 2012 12:50:42
%S 1,2,24,720,48000,4896000,804480000,175037491200,53010886656000,
%T 19962353688576000,9637819435745280000,5576675932580413440000,
%U 3929711821948633743360000,3235566861687414718464000000
%N arcsin(tan(arcsinh(x)))=x+2/3!*x^3+24/5!*x^5+720/7!*x^7+48000/9!*x^9...
%K nonn
%O 0,2
%A Patrick Demichel (patrick.demichel(AT)hp.com)