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A147516 as a simple table

na(n)
11
23
39
415
527
645
781
8105
9135
10225
11243
12315
13405
14675
15729
16945
171155
181215
191575
202025
212187
222835
233375
243465
253645
264725
276075
286561
298505
3010125
3110395
3210935
3311025
3414175
3515015
3617325
3718225
3819683
3923625
4025515
4130375
4231185
4332805

[1,3,9,15,27,45,81,105,135,225,243,315,405,675,
 729,945,1155,1215,1575,2025,2187,2835,3375,3465,
 3645,4725,6075,6561,8505,10125,10395,10935,11025,
 14175,15015,17325,18225,19683,23625,25515,30375,
 31185,32805]