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A033562 as a simple table

na(n)
01
13
217
355
4129
5251
6433
7687
81025
91459
102001
112663
123457
134395
145489
156751
168193
179827
1811665
1913719
2016001
2118523
2221297
2324335
2427649
2531251
2635153
2739367
2843905
2948779
3054001
3159583
3265537
3371875
3478609
3585751
3693313
37101307
38109745
39118639
40128001

[1,3,17,55,129,251,433,687,1025,1459,2001,2663,
 3457,4395,5489,6751,8193,9827,11665,13719,16001,
 18523,21297,24335,27649,31251,35153,39367,43905,
 48779,54001,59583,65537,71875,78609,85751,93313,
 101307,109745,118639,128001]