login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A084819
as a simple table
n
a(n)
1
1
2
7
3
18
4
51
5
147
6
423
7
1224
8
3543
9
10254
[1,7,18,51,147,423,1224,3543,10254]