%I #4 Feb 24 2012 12:50:41
%S 1,1,13,469,33433,3984681,718210725,183013440765,62801454477105,
%T 27970921286867025,15708198897246520125,10866653910101298549285,
%U 9083998201236955132833225,9030162506735790711308044665
%N cosh(arcsin(arctanh(x)))=1+1/2!*x^2+13/4!*x^4+469/6!*x^6+33433/8!*x^8...
%K nonn
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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