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A173555 as a simple table

na(n)
12
23
37
411
513
617
719
823
929
1031
1137
1253
1359
1461
1571
1679
1783
18137
19139
20149
21151
22157
23163
24167
25181
26191
27193
28199
29211
30223
31227
32229
33239
34269
35281
36283
37307
38311
39313
40317
41347
42353
43359
44367
45379
46383
47389
48401
49419
50491
51509
52521
53523
54541
55557

[2,3,7,11,13,17,19,23,29,31,37,53,59,61,71,79,83,
 137,139,149,151,157,163,167,181,191,193,199,211,
 223,227,229,239,269,281,283,307,311,313,317,347,
 353,359,367,379,383,389,401,419,491,509,521,523,
 541,557]