%I #4 Feb 24 2012 12:51:05
%S 1,-7,165,-10827,1316585,-257028847,73616009805,-29070305745267,
%T 15137914082015825,-10050622525103392087,8286707825575406550645,
%U -8306718039292070745761307,9948875920938941746670110265
%N arctan(tanh(x)*cos(x))=x-7/3!*x^3+165/5!*x^5-10827/7!*x^7...
%K sign
%O 0,2
%A Patrick Demichel (patrick.demichel(AT)hp.com)