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A242028
as a simple table
n
a(n)
1
3
2
4
3
6
4
9
5
36
6
54
7
96
8
216
9
576
10
1296
11
69984
12
236196
13
393216
14
497664
15
28697814
16
31850496
[3,4,6,9,36,54,96,216,576,1296,69984,236196, 393216,497664,28697814,31850496]