login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A293246
as a simple table
n
a(n)
0
2
1
2
2
3
3
7
4
25
5
121
6
241
7
1681
8
13441
9
40321
10
403201
11
2016001
12
3225601
13
41932801
14
609638401
[2,2,3,7,25,121,241,1681,13441,40321,403201, 2016001,3225601,41932801,609638401]