login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A198041
as a simple table
n
a(n)
1
1
2
5
3
23
4
190
5
3032
6
91604
7
4639102
8
420891042
9
69477009170
[1,5,23,190,3032,91604,4639102,420891042, 69477009170]