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sech(tan(x)*arcsin(x))=1-12/4!*x^4-360/6!*x^6-7280/8!*x^8...
0

%I #4 Feb 24 2012 12:50:48

%S 1,0,-12,-360,-7280,504000,121581504,14369939584,56810973440,

%T -657138821830656,-255226784793623552,-45397358372525164544,

%U 15722139759017802895360,20152649683846086682296320

%N sech(tan(x)*arcsin(x))=1-12/4!*x^4-360/6!*x^6-7280/8!*x^8...

%K sign

%O 0,3

%A Patrick Demichel (patrick.demichel(AT)hp.com)