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A099389 as a simple table

na(n)
15
27
317
419
529
631
737
853
953
1067
1179
1297
13113
14113
15127
16137
17137
18151
19157
20167
21197
22199
23211
24269
25293
26293
27337
28353
29349
30379
31389
32383
33439
34449
35457
36547
37557
38569
39607
40617
41619
42617
43653
44661
45691
46751
47757
48787
49829
50857
51857
52877
53887
54907
55919

[5,7,17,19,29,31,37,53,53,67,79,97,113,113,127,
 137,137,151,157,167,197,199,211,269,293,293,337,
 353,349,379,389,383,439,449,457,547,557,569,607,
 617,619,617,653,661,691,751,757,787,829,857,857,
 877,887,907,919]