login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A338772
as a simple table
n
a(n)
1
1
2
3
3
19
4
271
5
8635
6
623533
[1,3,19,271,8635,623533]