login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A006510
as a simple table
n
a(n)
1
2
2
3
3
5
4
7
5
23
6
67
7
89
8
4567
9
78901
10
678901
11
23456789
12
45678901
13
9012345678901
[2,3,5,7,23,67,89,4567,78901,678901,23456789, 45678901,9012345678901]