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%I #4 Feb 24 2012 12:51:29
%S 1,0,0,160,-1792,484224,-30840832,7718963200,-1315838558208,
%T 426971596029952,-136067874243248128,61019499461102272512,
%U -30246038986591439945728,18590454932996390870056960
%N cosh(tan(x)-arctan(x))=1+160/6!*x^6-1792/8!*x^8+484224/10!*x^10...
%K sign
%O 0,4
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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