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A211202
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
12
10
15
11
16
12
18
13
20
14
21
15
22
16
23
17
24
[1,2,3,4,5,6,7,8,12,15,16,18,20,21,22,23,24]
