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A222786
as a simple table
n
a(n)
1
2
2
3
3
4
4
6
5
8
6
12
7
18
8
30
9
54
10
156
11
270
12
411
13
870
14
1320
15
2268
16
4050
17
8190
[2,3,4,6,8,12,18,30,54,156,270,411,870,1320,2268, 4050,8190]