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A248602 as a simple table

na(n)
12
27
323
437
567
6263
7317
8359
9389
10443
11457
12499
13599
14743
15947
16967
171033
181103
191187
201303
211373
221423
231429
241453
251523
261579
271619
281663
291667
301787
311877
321913
332003
342083
352143
362297
372389
382543
392633
402683
412927
423109
433217
443229
453299
463313
473613
483623
493637
503719
513733
523739

[2,7,23,37,67,263,317,359,389,443,457,499,599,743,
 947,967,1033,1103,1187,1303,1373,1423,1429,1453,
 1523,1579,1619,1663,1667,1787,1877,1913,2003,2083,
 2143,2297,2389,2543,2633,2683,2927,3109,3217,3229,
 3299,3313,3613,3623,3637,3719,3733,3739]