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A122687
as a simple table
n
a(n)
1
0
2
1
3
1
4
1
5
1
6
2
7
2
8
4
9
3
10
3
11
1
12
4
13
7
14
9
15
2
16
3
17
0
18
18
19
14
20
13
21
10
22
7
23
1
24
1
[0,1,1,1,1,2,2,4,3,3,1,4,7,9,2,3,0,18,14,13,10,7, 1,1]