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A035280
as a simple table
n
a(n)
1
1
2
2
3
4
4
6
5
6
6
8
7
9
8
12
9
12
10
12
11
15
12
15
13
16
14
18
15
18
16
20
17
21
18
24
19
24
20
24
21
27
22
28
23
30
24
30
25
32
26
33
27
35
28
36
[1,2,4,6,6,8,9,12,12,12,15,15,16,18,18,20,21,24, 24,24,27,28,30,30,32,33,35,36]