login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A192604
as a simple table
n
a(n)
1
0
2
1
3
12
4
572
5
173936
6
353410332
7
4082259110399
[0,1,12,572,173936,353410332,4082259110399]