login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A098009
as a simple table
n
a(n)
1
1
2
2
3
4
4
9
5
12
6
30
7
102
8
138
[1,2,4,9,12,30,102,138]