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A118081
as a simple table
n
a(n)
1
2
2
4
3
6
4
8
5
10
6
12
7
14
8
16
9
20
10
22
11
26
12
28
13
32
14
38
[2,4,6,8,10,12,14,16,20,22,26,28,32,38]
