login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A018506
as a simple table
n
a(n)
1
1
2
2
3
3
4
6
5
89
6
178
7
267
8
534
[1,2,3,6,89,178,267,534]
