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A144421 as a simple table

na(n)
17
241
343
447
553
683
797
8107
9157
10167
11211
12251
13293
14353
15367
16401
17617
18683
19727
20839
21857
22859
23953
241109
251117
261277
271297
281381
291429
301481
311483
321553
331597
341867
351951
361999
372087
382213
392243
402297
412389
422423
432447
442473
452657
462659
472671
482719

[7,41,43,47,53,83,97,107,157,167,211,251,293,353,
 367,401,617,683,727,839,857,859,953,1109,1117,
 1277,1297,1381,1429,1481,1483,1553,1597,1867,1951,
 1999,2087,2213,2243,2297,2389,2423,2447,2473,2657,
 2659,2671,2719]