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A103095
as a simple table
n
a(n)
1
1
2
3
3
4
4
15
5
153
6
322
7
471
8
561
9
664
10
2157
11
3697
12
14875
13
19270
14
22095
[1,3,4,15,153,322,471,561,664,2157,3697,14875, 19270,22095]