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A045580 as a simple table

na(n)
11
23
39
427
539
681
7117
8171
9243
10351
11507
12513
13729
141053
151521
161539
172187
182223
193081
203159
213249
224563
234617
245109
256123
266561
276591
286669
299243
309477
319747
3213689
3313851
3415327
3518153
3618369
3719683
3819773
3920007
4027729
4128431
4228899
4329241
4439159
4540053

[1,3,9,27,39,81,117,171,243,351,507,513,729,1053,
 1521,1539,2187,2223,3081,3159,3249,4563,4617,5109,
 6123,6561,6591,6669,9243,9477,9747,13689,13851,
 15327,18153,18369,19683,19773,20007,27729,28431,
 28899,29241,39159,40053]