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A304724 as a simple table

na(n)
17
223
353
483
5103
6107
7139
8181
9197
10199
11223
12227
13239
14257
15277
16281
17313
18373
19397
20401
21431
22487
23509
24547
25571
26587
27661
28683
29691
30719
31761
32857
33877
34919
35953
36977
371009
381031
391039
401051
411069
421093
431097
441109
451151
461213
471283
481301
491321
501399
511499

[7,23,53,83,103,107,139,181,197,199,223,227,239,
 257,277,281,313,373,397,401,431,487,509,547,571,
 587,661,683,691,719,761,857,877,919,953,977,1009,
 1031,1039,1051,1069,1093,1097,1109,1151,1213,1283,
 1301,1321,1399,1499]