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A339920 as a simple table

na(n)
12
23
353
4151
5167
6263
7373
8443
9467
10509
11523
12571
131063
141103
151117
161217
171493
181553
191901
201973
212161
222207
232281
242399
252713
262837
272963
283259
293347
303511
314073
324297
334373
344463
354523
364673
374691
384877
395147
405237
415303
425419
435471
445851
456211
466311
476367

[2,3,53,151,167,263,373,443,467,509,523,571,1063,
 1103,1117,1217,1493,1553,1901,1973,2161,2207,2281,
 2399,2713,2837,2963,3259,3347,3511,4073,4297,4373,
 4463,4523,4673,4691,4877,5147,5237,5303,5419,5471,
 5851,6211,6311,6367]