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A084167
as a simple table
n
a(n)
1
1
2
5
3
17
4
109
5
157
6
317
7
389
8
449
9
709
10
1201
11
1237
12
1249
13
1429
14
1621
15
1801
16
2341
17
3001
[1,5,17,109,157,317,389,449,709,1201,1237,1249, 1429,1621,1801,2341,3001]