OFFSET
1,5
REFERENCES
J. F. Steffensen, On a class of polynomials and their application to actuarial problems, Skandinavisk Aktuarietidskrift, 11 (1928), 75-97.
LINKS
J. F. Steffensen, On a class of polynomials and their application to actuarial problems, Skandinavisk Aktuarietidskrift, Vol. 11, pp. 75-97, 1928.
FORMULA
See A241168.
a(n) ~ (n-1)! / (6*(log(2))^n). - Vaclav Kotesovec, Apr 22 2014
MAPLE
with(combinat);
T:=proc(n, k) add(stirling2(n, s+1)*s!/k!, s=k..n-1); end;
[seq(T(n, 3), n=1..16)];
MATHEMATICA
Flatten[{0, 0, 0, Table[Sum[StirlingS2[n, s+1]*s!/3!, {s, 3, n-1}], {n, 4, 20}]}] (* Vaclav Kotesovec, Apr 22 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 22 2014
STATUS
approved