login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A197994
as a simple table
n
a(n)
1
1
2
2
3
11
4
95
5
1963
6
70225
7
5408352
8
818404797
9
243161923228
[1,2,11,95,1963,70225,5408352,818404797, 243161923228]