login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A111010
as a simple table
n
a(n)
1
2
2
7
3
61
4
547
5
398581
6
23535794707
7
82064241848634269407
[2,7,61,547,398581,23535794707, 82064241848634269407]