login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A203021
as a simple table
n
a(n)
1
2
2
36
3
3216
4
257664
5
69822004
[2,36,3216,257664,69822004]