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A015914 as a simple table

na(n)
15
27
311
413
517
623
731
837
941
1047
1153
1261
1367
1473
1583
1697
17101
18103
19104
20107
21131
22147
23151
24157
25167
26173
27191
28193
29223
30227
31233
32251
33257
34263
35271
36277
37307
38311
39331
40347
41353
42367
43373
44383
45433
46443
47457
48461
49503
50541
51557
52563
53571

[5,7,11,13,17,23,31,37,41,47,53,61,67,73,83,97,
 101,103,104,107,131,147,151,157,167,173,191,193,
 223,227,233,251,257,263,271,277,307,311,331,347,
 353,367,373,383,433,443,457,461,503,541,557,563,
 571]