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A010412
as a simple table
n
a(n)
1
0
2
1
3
4
4
9
5
13
6
15
7
16
8
18
9
19
10
21
11
25
12
30
13
33
14
34
15
36
16
42
17
43
18
49
[0,1,4,9,13,15,16,18,19,21,25,30,33,34,36,42,43, 49]