OFFSET
0,3
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Tan[x]*Exp[Tanh[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Feb 20 2020 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Prior Mathematica program replaced and definition clarified by Harvey P. Dale, Feb 20 2020
STATUS
approved