login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A370161
as a simple table
n
a(n)
1
1
2
2
3
9
4
61
5
545
6
5986
[1,2,9,61,545,5986]