login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A143686
as a simple table
n
a(n)
1
5575680
2
13620639744
3
21296209880678400
[5575680,13620639744,21296209880678400]
