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A083042
as a simple table
n
a(n)
0
0
1
1
2
3
3
5
4
6
5
8
6
10
7
12
8
13
9
15
10
17
11
18
12
20
13
22
14
24
15
25
16
27
17
29
18
30
19
32
20
34
21
36
22
37
23
39
[0,1,3,5,6,8,10,12,13,15,17,18,20,22,24,25,27,29, 30,32,34,36,37,39]