login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A162140
as a simple table
n
a(n)
1
9
2
2040
3
19436124
4
8145789400512
5
170165111331383769226
6
194153361920388078075645150440
[9,2040,19436124,8145789400512, 170165111331383769226, 194153361920388078075645150440]