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A257667 as a simple table

na(n)
15
253
359
4151
5157
6251
7257
8353
9359
10457
11503
12509
13521
14523
15541
16547
17557
18563
19569
20571
21577
22587
23593
24599
25653
26659
27751
28757
29853
30857
31859
32953
331051
341151
351153
361259
371451
381453
391459
401511
411523
421531
431543
441549
451553
461559
471567
481571
491579

[5,53,59,151,157,251,257,353,359,457,503,509,521,
 523,541,547,557,563,569,571,577,587,593,599,653,
 659,751,757,853,857,859,953,1051,1151,1153,1259,
 1451,1453,1459,1511,1523,1531,1543,1549,1553,1559,
 1567,1571,1579]