login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A197882
as a simple table
n
a(n)
1
1
2
4
3
6
4
155
5
2730
6
129294
7
13253562
8
2512321052
[1,4,6,155,2730,129294,13253562,2512321052]