login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A060174
as a simple table
n
a(n)
1
1
2
4
3
32
4
320
5
3536
6
41344
7
501264
[1,4,32,320,3536,41344,501264]