OFFSET
0,3
FORMULA
a(n) ~ (n-1)! * (-1)^n. - Vaclav Kotesovec, Jan 24 2015
MATHEMATICA
CoefficientList[Series[(x*(2 + x)*Log[1 + x])/(2 + x*(2 + x)), {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 24 2015 *)
With[{nn=30}, CoefficientList[Series[Tanh[Log[1+x]]*Log[1+x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 26 2020 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified and first Mathematica program replaced by Harvey P. Dale, Aug 26 2020
STATUS
approved