%I #4 Feb 24 2012 12:51:04
%S 2,-16,200,1024,-523232,36263680,7024697472,-3839533326336,
%T 933770326393344,5856130402316288,-153024990104004376576,
%U 83925295292036381278208,4161808298471932199182336
%N arcsinh(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+200/6!*x^6+1024/8!*x^8...
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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