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A109991 as a simple table

na(n)
11
23
37
419
521
631
737
839
949
1061
1163
1267
1387
1493
15117
16129
17169
18177
19211
20223
21237
22241
23259
24261
25289
26301
27321
28327
29337
30339
31379
32397
33411
34423
35427
36463
37469
38471
39493
40499
41513
42523
43547
44589
45591
46607
47609
48643
49651
50657
51661
52663
53667
54681
55721
56729

[1,3,7,19,21,31,37,39,49,61,63,67,87,93,117,129,
 169,177,211,223,237,241,259,261,289,301,321,327,
 337,339,379,397,411,423,427,463,469,471,493,499,
 513,523,547,589,591,607,609,643,651,657,661,663,
 667,681,721,729]