login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A003174
as a simple table
n
a(n)
1
2
2
3
3
5
4
6
5
7
6
11
7
13
8
17
9
19
10
21
11
29
12
33
13
37
14
41
15
57
16
73
[2,3,5,6,7,11,13,17,19,21,29,33,37,41,57,73]