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A235481 as a simple table

na(n)
12
23
329
441
561
689
7109
8149
9157
10281
11293
12313
13401
14421
15433
16593
17701
18709
191013
201049
211061
221069
231097
241117
251277
261289
271301
281553
291601
301709
312069
322137
332237
342309
352377
362437
372477
382689
392729
402749
412797
422957
432969
443001
453061
463109
473169
483329
493361
503389
513457
523533
533701

[2,3,29,41,61,89,109,149,157,281,293,313,401,421,
 433,593,701,709,1013,1049,1061,1069,1097,1117,
 1277,1289,1301,1553,1601,1709,2069,2137,2237,2309,
 2377,2437,2477,2689,2729,2749,2797,2957,2969,3001,
 3061,3109,3169,3329,3361,3389,3457,3533,3701]