login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A126009
as a simple table
n
a(n)
0
0
1
2
2
1
3
3
4
9
5
10
6
8
7
12
8
6
9
4
10
5
11
11
12
7
13
17
14
18
15
19
16
20
17
13
18
14
19
15
20
16
21
21
[0,2,1,3,9,10,8,12,6,4,5,11,7,17,18,19,20,13,14, 15,16,21]