login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A207007
as a simple table
n
a(n)
1
3
2
81
3
7891
4
5174065
5
18649387825
6
381916401448593
7
44164224032234465777
[3,81,7891,5174065,18649387825,381916401448593, 44164224032234465777]