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A034170
as a simple table
n
a(n)
1
5
2
13
3
21
4
33
5
37
6
57
7
85
8
93
9
105
10
133
11
165
12
177
13
253
14
273
15
345
16
357
17
385
18
1365
[5,13,21,33,37,57,85,93,105,133,165,177,253,273, 345,357,385,1365]