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A086934
E.g.f.: (sqrt(Pi)/2)*erf(log(1-x)).
1
0, -1, -1, 0, 6, 34, 150, 548, 1064, -9620, -190980, -2379408, -26412408, -281137848, -2923819080, -29496805392, -277842087360, -2151448802448, -5085750338064, 334794720634752, 11987850975483360
OFFSET
0,5
LINKS
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
Cf. A009199.
Sequence in context: A166812 A262844 A166941 * A009469 A222190 A304944
KEYWORD
sign
AUTHOR
Vladeta Jovovic, Sep 21 2003
EXTENSIONS
Definition clarified by Harvey P. Dale, Mar 04 2015
STATUS
approved