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%I #6 Feb 24 2012 12:51:30
%S 1,-12,8288,-39475392,689369608448,-32038788679636992,
%T 3265606511334528831488,-641363922266872095050022912
%N sech(cos(x)-cosh(x)) = 1-12/4!*x^4+8288/8!*x^8-39475392/12!*x^12...
%K sign
%O 0,2
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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