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A010388
as a simple table
n
a(n)
1
0
2
1
3
3
4
4
5
9
6
10
7
12
8
13
9
14
10
16
11
17
12
22
13
23
14
25
[0,1,3,4,9,10,12,13,14,16,17,22,23,25]