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A215104 as a simple table

na(n)
12
23
35
419
537
653
771
873
9107
10139
11173
12223
13241
14257
15277
16311
17359
18379
19461
20479
21547
22563
23617
24631
25683
26719
27733
28751
29787
30821
31853
32887
33937
34971
35991
361039
371091
381093
391193
401229
411277
421297
431399
441433
451447
461481
471499
481549
491567
501583
511601

[2,3,5,19,37,53,71,73,107,139,173,223,241,257,277,
 311,359,379,461,479,547,563,617,631,683,719,733,
 751,787,821,853,887,937,971,991,1039,1091,1093,
 1193,1229,1277,1297,1399,1433,1447,1481,1499,1549,
 1567,1583,1601]