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A240801
as a simple table
n
a(n)
2
1
3
1
4
3
5
3
6
12
7
12
8
15
9
75
10
120
11
60
12
105
13
630
14
1350
15
1200
16
360
17
945
18
6615
19
17640
20
22050
21
12600
22
2520
[1,1,3,3,12,12,15,75,120,60,105,630,1350,1200,360, 945,6615,17640,22050,12600,2520]