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A237051
as a simple table
n
a(n)
1
6
2
10
3
12
4
14
5
15
6
18
7
20
8
21
9
22
10
24
11
26
12
28
13
33
14
35
15
36
16
39
17
40
18
44
19
52
20
55
[6,10,12,14,15,18,20,21,22,24,26,28,33,35,36,39, 40,44,52,55]