login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A340538
as a simple table
n
a(n)
1
0
2
1
3
5
4
25
5
125
6
875
7
8207
[0,1,5,25,125,875,8207]