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A074191
as a simple table
n
a(n)
1
1
2
1
3
1
4
8
5
8
6
144
7
144
8
576
9
5184
10
518400
11
518400
12
2073600
13
2073600
14
101606400
[1,1,1,8,8,144,144,576,5184,518400,518400,2073600, 2073600,101606400]