login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A011792
as a simple table
n
a(n)
0
1
1
3
2
18
3
121
4
896
5
7028
6
57406
7
483080
[1,3,18,121,896,7028,57406,483080]