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A070174 as a simple table

na(n)
12
23
311
423
529
637
743
873
979
1083
11113
12131
13151
14179
15191
16197
17211
18223
19233
20239
21251
22263
23283
24317
25337
26359
27367
28397
29419
30431
31443
32461
33463
34487
35491
36499
37547
38557
39571
40577
41593
42601
43617
44619
45641
46659
47683
48719

[2,3,11,23,29,37,43,73,79,83,113,131,151,179,191,
 197,211,223,233,239,251,263,283,317,337,359,367,
 397,419,431,443,461,463,487,491,499,547,557,571,
 577,593,601,617,619,641,659,683,719]