login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A018374
as a simple table
n
a(n)
1
1
2
3
3
5
4
15
5
19
6
57
7
95
8
285
[1,3,5,15,19,57,95,285]