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%I #15 Apr 02 2017 21:13:04
%S 0,2,16,32,-18944,-2146048,-147605504,12359002112,9374161371136,
%T 2762835317030912,343159496128331776,-231213975915368808448,
%U -236417180330506147856384,-118337919812286157284179968
%N tanh(tan(x)*tan(x))=2/2!*x^2+16/4!*x^4+32/6!*x^6-18944/8!*x^8...
%t Tanh[ Tan[ x ]^2 ] (* Even Part *)
%K sign
%O 0,2
%A _R. H. Hardin_
%E Extended with signs by _Olivier Gérard_, Mar 15 1997
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