login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A030331
as a simple table
n
a(n)
0
1
1
0
2
0
3
0
4
0
5
18216
6
156492
7
1147608
8
3736557
9
6248088
10
4399164
11
1038312
12
32778
[1,0,0,0,0,18216,156492,1147608,3736557,6248088, 4399164,1038312,32778]