login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A180842
as a simple table
n
a(n)
1
1
2
0
3
44
4
14284
5
8554238
6
9893281255
7
19903018463755
[1,0,44,14284,8554238,9893281255,19903018463755]