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A301370
as a simple table
n
a(n)
2
0
3
2
4
2
5
3
6
4
7
4
8
6
9
8
10
9
11
12
12
16
13
18
14
24
15
32
16
36
17
48
18
64
[0,2,2,3,4,4,6,8,9,12,16,18,24,32,36,48,64]