login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A106674
as a simple table
n
a(n)
0
0
1
1
2
7
3
11
4
20
5
23
6
25
[0,1,7,11,20,23,25]