login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A063800
as a simple table
n
a(n)
3
1
4
2
5
4
6
17
7
143
8
4890
9
461053
10
95052532
[1,2,4,17,143,4890,461053,95052532]