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A090944
as a simple table
n
a(n)
1
1
2
6
3
140
4
270
5
672
6
1638
7
2970
8
6200
9
8190
10
18600
11
18620
12
27846
13
30240
14
32760
15
55860
16
105664
[1,6,140,270,672,1638,2970,6200,8190,18600,18620, 27846,30240,32760,55860,105664]