OFFSET
0,4
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Tanh[Log[1+Tan[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Oct 26 2014 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Prior Mathematica program replaced by Harvey P. Dale, Oct 26 2014
STATUS
approved