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A161507
as a simple table
n
a(n)
1
1
2
2
3
6
4
12
5
30
6
60
7
420
8
840
9
27720
10
360360
11
6126120
12
2677114440
13
2406725881560
[1,2,6,12,30,60,420,840,27720,360360,6126120, 2677114440,2406725881560]