OFFSET
0,4
EXAMPLE
sech(exp(x)-cos(x)) = 1 -x^2/2! -6*x^3/3! -11*x^4/4! +80*x^5/5! ...
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Sech[Exp[x]-Cos[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 06 2015 *)
CROSSREFS
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved