login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A211120
as a simple table
n
a(n)
1
3
2
5
3
7
4
9
5
15
6
21
7
25
8
35
9
45
10
175
11
525
[3,5,7,9,15,21,25,35,45,175,525]