login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A266884
as a simple table
n
a(n)
1
1
2
0
3
1
4
22
5
525
6
26100
7
1916217
8
197069522
9
26421089461
10
4477779976928
11
934604232708721
[1,0,1,22,525,26100,1916217,197069522,26421089461, 4477779976928,934604232708721]