login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A001562
as a simple table
n
a(n)
1
5
2
7
3
19
4
31
5
53
6
67
7
293
8
641
9
2137
10
3011
11
268207
12
1600787
[5,7,19,31,53,67,293,641,2137,3011,268207,1600787]