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A219128 as a simple table

na(n)
13
23
39
49
515
627
717
887
969
1081
1137
12205
13787
14253
15243
1677
17899
183495
196981
201049
21729
22163
232521
2427993
2542231
2663183
274205
282187
29343
309709
31154447
32717585
33607115
34571149
3516887
366561
37723
3829747
391080809
405940377
4120168447
428325319
435167013

[3,3,9,9,15,27,17,87,69,81,37,205,787,253,243,77,
 899,3495,6981,1049,729,163,2521,27993,42231,63183,
 4205,2187,343,9709,154447,717585,607115,571149,
 16887,6561,723,29747,1080809,5940377,20168447,
 8325319,5167013]