%I #4 Feb 24 2012 12:50:39
%S 1,-1,17,-673,48481,-5556929,930399601,-214412110305,65104843008449,
%T -25194079035190657,12104203127776694225,-7069126951831617433377,
%U 4932323527151866597114145,-4052159085639349626953573441
%N sech(sin(tanh(x)))=1-1/2!*x^2+17/4!*x^4-673/6!*x^6+48481/8!*x^8...
%K sign
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
|