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A051602
as a simple table
n
a(n)
0
0
1
0
2
0
3
0
4
1
5
1
6
2
7
3
8
4
9
6
10
7
11
8
12
11
13
13
14
15
15
17
16
20
17
22
[0,0,0,0,1,1,2,3,4,6,7,8,11,13,15,17,20,22]