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A040995 as a simple table

na(n)
15
27
313
417
519
629
731
837
941
1043
1153
1267
1379
1489
1597
16101
17103
18109
19113
20127
21137
22139
23149
24151
25157
26163
27173
28181
29197
30199
31211
32223
33229
34233
35241
36257
37269
38271
39277
40281
41283
42293
43307
44313
45317
46331
47337
48349
49353
50367
51373

[5,7,13,17,19,29,31,37,41,43,53,67,79,89,97,101,
 103,109,113,127,137,139,149,151,157,163,173,181,
 197,199,211,223,229,233,241,257,269,271,277,281,
 283,293,307,313,317,331,337,349,353,367,373]