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A046690
as a simple table
n
a(n)
1
1
2
2
3
2
4
8
5
12
6
5
7
42
8
84
9
56
10
14
11
262
12
640
13
580
14
240
15
42
16
1828
17
5236
18
5894
19
3344
20
990
[1,2,2,8,12,5,42,84,56,14,262,640,580,240,42,1828, 5236,5894,3344,990]