A058808 - cp's OEIS frontend

A058808 Product{k=1 to n}[S(n,k)], where S(n,k) is a Stirling number of the second kind. (S(n,k) = number of ways of partitioning a set of n elements into k nonempty subsets.)

n	a(n)
1	1
2	1
3	3
4	42
5	3750
6	2720250
7	19512927000
8	1631977354072800
9	1833446251541145780000
10	31323109023670061678062500000
11	9087660958278168844264470405352500000

[1, 1, 3, 42, 3750, 2720250, 19512927000, 1631977354072800, 1833446251541145780000, 31323109023670061678062500000, 9087660958278168844264470405352500000]

cp's OEIS Frontend

A058808 Product{k=1 to n}[S(n,k)], where S(n,k) is a Stirling number of the second kind. (S(n,k) = number of ways of partitioning a set of n elements into k nonempty subsets.)

Table of values

List of values