OFFSET
0,5
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..450
FORMULA
Sum_{k=0..floor((n-1)/2)} (-1)^(n-k)*Stirling1(n, 2*k+1)*(2*k)!/(k)!.
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Sqrt[Pi]/2 Erf[Log[1-x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 04 2015 *)
CROSSREFS
KEYWORD
sign
AUTHOR
Vladeta Jovovic, Sep 21 2003
EXTENSIONS
Definition clarified by Harvey P. Dale, Mar 04 2015
STATUS
approved