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A155030 as a simple table

na(n)
15
211
317
431
541
667
7109
8127
9157
10191
11211
12241
13277
14331
15367
16401
17461
18509
19547
20563
21587
22599
23617
24739
25773
26797
27859
28877
29919
30967
31991
321031
331063
341087
351153
361171
371201
381217
391297
401409
411447
421471
431499
441523
451597
461621
471669
481723
491741

[5,11,17,31,41,67,109,127,157,191,211,241,277,331,
 367,401,461,509,547,563,587,599,617,739,773,797,
 859,877,919,967,991,1031,1063,1087,1153,1171,1201,
 1217,1297,1409,1447,1471,1499,1523,1597,1621,1669,
 1723,1741]