login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A241705
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
0
6
0
7
1
8
4
9
65
10
3441
11
857365
12
487560158
13
466534106494
[0,0,0,0,0,0,1,4,65,3441,857365,487560158, 466534106494]