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A165325
as a simple table
n
a(n)
2
2
3
6
4
18
5
6
6
48
7
66
8
6
9
126
10
402
11
186
12
6
13
306
14
2028
15
2232
16
468
17
6
18
738
19
8790
20
19426
21
10212
22
1098
23
6
[2,6,18,6,48,66,6,126,402,186,6,306,2028,2232,468, 6,738,8790,19426,10212,1098,6]