OFFSET
1,4
MATHEMATICA
With[{nn=20}, CoefficientList[Series[ArcSinh[Sech[x]Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Oct 22 2019 *)
CROSSREFS
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Zero prepended and definition clarified by Harvey P. Dale, Oct 22 2019
STATUS
approved