login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A110972
as a simple table
n
a(n)
1
4
2
24
3
2160
4
522720
5
4844836800
[4,24,2160,522720,4844836800]