login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A337526
as a simple table
n
a(n)
1
1
2
2
3
5
4
15
5
50
6
180
7
686
8
2731
[1,2,5,15,50,180,686,2731]
