login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A188303
as a simple table
n
a(n)
1
0
2
128
3
3784
4
321696
5
53468700
6
21615769428
[0,128,3784,321696,53468700,21615769428]