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arcsin(tan(tan(x)))=x+5/3!*x^3+121/5!*x^5+7013/7!*x^7+760465/9!*x^9...
0

%I #4 Feb 24 2012 12:50:41

%S 1,5,121,7013,760465,134832389,35777541385,13330794123941,

%T 6648498133614241,4277423006885663237,3448604325132908471833,

%U 3404386999104410323462373,4038035818558270717884559921

%N arcsin(tan(tan(x)))=x+5/3!*x^3+121/5!*x^5+7013/7!*x^7+760465/9!*x^9...

%K nonn

%O 0,2

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