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A166705 as a simple table

na(n)
11
29
317
481
589
6153
7161
8729
9289
10801
11809
121377
131385
141449
151513
166561
176569
182601
192609
207209
212737
227281
237289
2412393
257921
2612465
274913
2813041
2913049
3013617
3113625
3259049
3313753
3459121
3514329
3623409
3723417
3823481
3923545
4064881
4164889

[1,9,17,81,89,153,161,729,289,801,809,1377,1385,
 1449,1513,6561,6569,2601,2609,7209,2737,7281,7289,
 12393,7921,12465,4913,13041,13049,13617,13625,
 59049,13753,59121,14329,23409,23417,23481,23545,
 64881,64889]