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A174742 as a simple table

na(n)
12
23
313
437
543
647
759
873
989
1097
11103
12107
13113
14127
15131
16137
17151
18167
19173
20179
21181
22191
23193
24199
25223
26227
27233
28239
29241
30251
31257
32263
33269
34277
35307
36313
37317
38331
39353
40359
41367
42373
43383
44397
45419
46421
47433
48439
49443
50461
51479
52487
53503
54521
55523
56541
57557
58563
59569
60571
61577
62587
63593
64599
65601
66607
67613

[2,3,13,37,43,47,59,73,89,97,103,107,113,127,131,
 137,151,167,173,179,181,191,193,199,223,227,233,
 239,241,251,257,263,269,277,307,313,317,331,353,
 359,367,373,383,397,419,421,433,439,443,461,479,
 487,503,521,523,541,557,563,569,571,577,587,593,
 599,601,607,613]