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A271168
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
12
12
14
13
16
14
18
15
20
16
24
17
30
18
36
[1,2,3,4,5,6,7,8,9,10,12,14,16,18,20,24,30,36]