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A012507 sec(cos(x)*arctan(x))=1+1/2!*x^2-15/4!*x^4+105/6!*x^6+8897/8!*x^8... 0

%I

%S 1,1,-15,105,8897,-664815,-4523343,8138992953,-972054629887,

%T -115219461350367,72803853486273265,-6666182957939643127,

%U -7549270905441932464191,4123382958180269131627825

%N sec(cos(x)*arctan(x))=1+1/2!*x^2-15/4!*x^4+105/6!*x^6+8897/8!*x^8...

%K sign

%O 0,3

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

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Last modified November 11 18:50 EST 2019. Contains 329031 sequences. (Running on oeis4.)