login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A109162
as a simple table
n
a(n)
1
1
2
2
3
3
4
6
5
15
6
210
7
10659
8
54230826
9
249853434654335387610276087
[1,2,3,6,15,210,10659,54230826, 249853434654335387610276087]