OFFSET
0,5
MATHEMATICA
terms = 20; CoefficientList[Cosh[ArcTanh[x] Log[1 + x]] + O[x]^terms, x] * Range[0, terms - 1]! (* Jean-François Alcover, May 19 2017 *)
With[{nn=30}, CoefficientList[Series[Cosh[ArcTanh[x]Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Dec 02 2017 *)
CROSSREFS
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Dec 02 2017
STATUS
approved