login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A193000
as a simple table
n
a(n)
1
0
2
1
3
1
4
6
5
35
6
697
7
19477
8
1565794
9
210688406
10
77029067005
[0,1,1,6,35,697,19477,1565794,210688406, 77029067005]