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A037229
as a simple table
n
a(n)
0
2
1
3
2
4
3
6
4
8
5
10
6
12
7
14
8
18
9
20
10
24
11
30
12
42
13
60
14
90
[2,3,4,6,8,10,12,14,18,20,24,30,42,60,90]