login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A166187
as a simple table
n
a(n)
0
1
1
16
2
816
3
70308
4
69652946
5
300342814211
[1,16,816,70308,69652946,300342814211]