login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A138161
as a simple table
n
a(n)
2
1
3
2
4
2
5
3
6
4
7
4
8
4
9
5
10
5
[1,2,2,3,4,4,4,5,5]