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A010416
as a simple table
n
a(n)
1
0
2
1
3
4
4
5
5
9
6
11
7
14
8
15
9
16
10
20
11
25
12
26
13
31
14
34
15
36
16
44
17
45
18
49
[0,1,4,5,9,11,14,15,16,20,25,26,31,34,36,44,45,49]