login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A056246
as a simple table
n
a(n)
1
0
2
1
3
3
4
19
5
31
6
399
7
561
8
7015
9
37683
[0,1,3,19,31,399,561,7015,37683]
