OFFSET
0,3
COMMENTS
The factor (n+1)! normalizes the sequence to integers.
E.g.f. for a(n)/(n+1)!: x/((x-1)*log(1-x)).
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..200
MATHEMATICA
a[n_] := (n+1)! Integrate[Pochhammer[x, n], {x, 0, 1}]; Table[a[n], {n, 0, 20}]
Table[(n+1)! * Sum[(-1)^(n-k) * StirlingS1[n, k] / (k+1), {k, 0, n}], {n, 0, 20}] (* Vaclav Kotesovec, Aug 03 2014 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vladimir Reshetnikov, Jul 31 2014
STATUS
approved