login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A010563
as a simple table
n
a(n)
0
1
1
6
2
108
3
2628
4
72638
5
2200108
[1,6,108,2628,72638,2200108]