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A318134
as a simple table
n
a(n)
1
3
2
15
3
21
4
375
5
108
6
2427
7
402
8
176391
9
1533
10
216030
11
10992
12
19375935
13
24612
14
13106514
[3,15,21,375,108,2427,402,176391,1533,216030, 10992,19375935,24612,13106514]