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A340521
as a simple table
n
a(n)
1
1
2
2
3
4
4
6
5
8
6
10
7
12
8
16
9
18
10
20
11
22
12
24
13
28
14
30
15
32
16
36
17
40
18
42
19
44
20
46
21
48
22
52
23
54
24
56
25
58
26
60
[1,2,4,6,8,10,12,16,18,20,22,24,28,30,32,36,40,42, 44,46,48,52,54,56,58,60]