login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A067220
as a simple table
n
a(n)
0
1
1
13
2
169
3
112489
4
10309971465
5
121778484808846083
6
193842679171307621077398205
[1,13,169,112489,10309971465,121778484808846083, 193842679171307621077398205]