login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A307334
as a simple table
n
a(n)
0
3
1
6
2
18
3
114
4
2970
5
1185282
6
100301050602
[3,6,18,114,2970,1185282,100301050602]