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A018585
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
6
6
7
7
8
8
12
9
14
10
16
11
21
12
24
13
28
14
32
15
42
16
48
17
56
18
84
19
96
20
112
21
168
22
224
23
336
24
672
[1,2,3,4,6,7,8,12,14,16,21,24,28,32,42,48,56,84, 96,112,168,224,336,672]