OFFSET
0,4
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Tanh[Log[1+Tanh[x]]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Aug 17 2012 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified by Harvey P. Dale, Aug 17 2012
STATUS
approved