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A135118
as a simple table
n
a(n)
1
1
2
2
3
3
4
13
5
19
6
81
7
658
8
1009
9
1070
10
1731
11
2899
12
4237
13
5499
14
18628
15
28699
16
47026
[1,2,3,13,19,81,658,1009,1070,1731,2899,4237,5499, 18628,28699,47026]