login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A070322
as a simple table
n
a(n)
0
1
1
1
2
3
3
139
4
25575
5
18077431
6
47024942643
[1,1,3,139,25575,18077431,47024942643]
