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%I #4 Feb 24 2012 12:50:50
%S 1,0,-12,0,-7280,241920,-39796416,5601756160,-1164660739840,
%T 326680627961856,-107144725837171712,45897715016709799936,
%U -22689657885234118356992,13649678748377009638277120
%N cos(arctan(x)*tan(x))=1-12/4!*x^4-7280/8!*x^8+241920/10!*x^10...
%K sign
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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