login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A131309
as a simple table
n
a(n)
0
1
1
1
2
1
3
0
4
1
5
1
6
0
7
1
8
1
9
0
10
1
11
0
12
1
13
1
14
0
15
1
16
1
17
0
18
1
19
0
20
1
21
1
22
0
23
1
24
1
25
0
26
1
27
0
28
1
29
1
30
0
31
1
32
0
[1,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1, 1,0,1,0,1,1,0,1,0]