login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A061221
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
1440
6
5328
7
47952
8
72576
9
81792
[0,0,0,0,1440,5328,47952,72576,81792]
