OFFSET
3,2
COMMENTS
Equals fourth left hand column of A161198 triangle divided by 8. - Johannes W. Meijer, Jun 08 2009
LINKS
G. C. Greubel, Table of n, a(n) for n = 3..400
FORMULA
a(n) = Sum_{i=k+1..n} (-1)^(k+1-i)*2^(n-1)*binomial(i-1, k)*s1(n, i) with k = 3, where s1(n, i) are unsigned Stirling numbers of the first kind. - Victor Adamchik (adamchik(AT)ux10.sp.cs.cmu.edu), Jan 23 2001
E.g.f.: -(log(1-2*x))^3/( 48*sqrt(1-2*x) ). - Vladeta Jovovic, Feb 19 2003
MATHEMATICA
Table[Coefficient[Product[x + 2*k - 1, {k, 1, n}], x, 3], {n, 3, 50}] (* G. C. Greubel, Nov 24 2016 *)
PROG
(PARI) a(n) = polcoeff(prod(k=1, n, x+2*k-1), 3); \\ Michel Marcus, Nov 12 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Michel Marcus, Nov 12 2014
STATUS
approved