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A250000
as a simple table
n
a(n)
1
0
2
0
3
1
4
2
5
4
6
5
7
7
8
9
9
12
10
14
11
17
12
21
13
24
14
28
15
32
[0,0,1,2,4,5,7,9,12,14,17,21,24,28,32]