login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A165731
as a simple table
n
a(n)
2
5
3
15
4
56
5
132
6
517
7
1202
8
3888
9
11911
[5,15,56,132,517,1202,3888,11911]