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A085646
as a simple table
n
a(n)
1
1
2
5
3
24
4
52
5
120
6
120
7
336
8
496
9
654
10
600
11
1320
12
1248
13
2184
14
1680
15
2880
[1,5,24,52,120,120,336,496,654,600,1320,1248,2184, 1680,2880]