login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A222954
as a simple table
n
a(n)
1
2
2
2
3
16
4
16
5
512
6
512
7
323600
8
144930
9
1808243216
10
615667968
[2,2,16,16,512,512,323600,144930,1808243216, 615667968]