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A010400
as a simple table
n
a(n)
1
0
2
1
3
3
4
4
5
9
6
10
7
12
8
13
9
16
10
22
11
25
12
27
13
30
14
36
[0,1,3,4,9,10,12,13,16,22,25,27,30,36]