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A243401 as a simple table

na(n)
15
223
341
461
573
6103
7109
8157
9167
10181
11307
12311
13347
14367
15467
16577
17593
18601
19677
20709
21739
22839
23863
241039
251181
261201
271279
281381
291399
301621
311627
321789
331847
341861
351871
361913
371997
382063
392287
402347
412371
422657
432699
442797
452887
462963
473209
483343
493359
503623

[5,23,41,61,73,103,109,157,167,181,307,311,347,
 367,467,577,593,601,677,709,739,839,863,1039,1181,
 1201,1279,1381,1399,1621,1627,1789,1847,1861,1871,
 1913,1997,2063,2287,2347,2371,2657,2699,2797,2887,
 2963,3209,3343,3359,3623]