login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A123833
as a simple table
n
a(n)
1
1
2
1
3
9
4
22
5
317
6
980
7
13801
8
48756
9
660997
10
2505447
[1,1,9,22,317,980,13801,48756,660997,2505447]