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tan(cos(x)*arctan(x))=x-3/3!*x^3-35/5!*x^5+1729/7!*x^7-12711/9!*x^9...
0

%I #4 Feb 24 2012 12:50:51

%S 1,-3,-35,1729,-12711,-5819099,581423349,26066838953,-19485197470415,

%T 2379630157273805,789057561743200397,-445703452244142678255,

%U 25928070972710765150345,80008658408138506870433013

%N tan(cos(x)*arctan(x))=x-3/3!*x^3-35/5!*x^5+1729/7!*x^7-12711/9!*x^9...

%K sign

%O 0,2

%A Patrick Demichel (patrick.demichel(AT)hp.com)