login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A216692
as a simple table
n
a(n)
1
2
2
9
3
189
4
11730
5
1561834
6
370625430
7
139733635588
[2,9,189,11730,1561834,370625430,139733635588]