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A243755 as a simple table

na(n)
12
23
35
411
559
661
783
8101
9131
10151
11179
12181
13197
14251
15257
16269
17271
18317
19337
20347
21367
22419
23443
24461
25523
26563
27577
28587
29593
30659
31709
32733
33797
34811
35821
36827
37863
38947
39971
40977
411061
421063
431069
441097
451129
461153
471171
481187
491217
501229
511277
521283
531301
541361
551433
561451
571543
581553
591601
601619

[2,3,5,11,59,61,83,101,131,151,179,181,197,251,
 257,269,271,317,337,347,367,419,443,461,523,563,
 577,587,593,659,709,733,797,811,821,827,863,947,
 971,977,1061,1063,1069,1097,1129,1153,1171,1187,
 1217,1229,1277,1283,1301,1361,1433,1451,1543,1553,
 1601,1619]