login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A217824
as a simple table
n
a(n)
1
1
2
19
3
642
4
27453
5
1339531
6
71173264
[1,19,642,27453,1339531,71173264]