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A242752 as a simple table

na(n)
12
23
35
413
517
629
731
841
947
1061
1189
12101
13107
14137
15167
16179
17193
18197
19223
20229
21251
22257
23263
24271
25293
26313
27337
28347
29353
30379
31401
32431
33439
34487
35499
36587
37593
38599
39601
40643
41647
42653
43659
44677
45701
46727
47733
48739
49751
50797
51821
52823
53829
54857
55919
56929
57941
58967
59971
60983

[2,3,5,13,17,29,31,41,47,61,89,101,107,137,167,
 179,193,197,223,229,251,257,263,271,293,313,337,
 347,353,379,401,431,439,487,499,587,593,599,601,
 643,647,653,659,677,701,727,733,739,751,797,821,
 823,829,857,919,929,941,967,971,983]