login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A234947
as a simple table
n
a(n)
1
1
2
3
3
12
4
8
5
21
6
720
7
4079
8
3040
9
20505
10
1669221
11
14708525
12
10567748
[1,3,12,8,21,720,4079,3040,20505,1669221,14708525, 10567748]