login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A018648
as a simple table
n
a(n)
1
1
2
2
3
5
4
10
5
79
6
158
7
395
8
790
[1,2,5,10,79,158,395,790]