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A034170 as a simple table

na(n)
15
213
321
433
537
657
785
893
9105
10133
11165
12177
13253
14273
15345
16357
17385
181365

[5,13,21,33,37,57,85,93,105,133,165,177,253,273,
 345,357,385,1365]