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A337046
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
4
6
6
7
8
8
10
9
14
10
16
11
17
12
19
13
20
14
21
15
22
16
23
17
24
18
25
[0,1,2,3,4,6,8,10,14,16,17,19,20,21,22,23,24,25]