login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A287650
as a simple table
n
a(n)
1
2
2
12288
3
81217160478720
4
6101215007109090122576072540160
[2,12288,81217160478720, 6101215007109090122576072540160]