login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A000983
as a simple table
n
a(n)
1
1
2
2
3
2
4
4
5
7
6
12
7
16
8
32
9
62
[1,2,2,4,7,12,16,32,62]