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A301913 as a simple table

na(n)
15
27
311
417
519
629
731
843
953
1059
1179
1283
1389
1497
15101
16107
17113
18127
19131
20137
21139
22149
23163
24173
25179
26197
27199
28211
29223
30227
31233
32241
33251
34257
35269
36281
37283
38293
39317
40331
41337
42347
43353
44379
45389
46401
47409
48419
49439
50443
51449
52457
53461
54463
55467

[5,7,11,17,19,29,31,43,53,59,79,83,89,97,101,107,
 113,127,131,137,139,149,163,173,179,197,199,211,
 223,227,233,241,251,257,269,281,283,293,317,331,
 337,347,353,379,389,401,409,419,439,443,449,457,
 461,463,467]