login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A077777
as a simple table
n
a(n)
1
3
2
7
3
15
4
21
5
25
6
961
7
1899
8
3891
9
15097
10
17847
[3,7,15,21,25,961,1899,3891,15097,17847]