login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A054268
as a simple table
n
a(n)
1
3
2
5
3
109
4
111111109
5
259259257
[3,5,109,111111109,259259257]