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A102939
as a simple table
n
a(n)
1
1
2
2
3
3
4
18
5
177
6
324
7
388
8
392
9
404
10
531
11
1083
12
12546
13
22443
14
54388
15
72916
16
185520
[1,2,3,18,177,324,388,392,404,531,1083,12546, 22443,54388,72916,185520]