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A042992 as a simple table

na(n)
12
23
35
47
513
617
719
823
931
1037
1141
1247
1359
1461
1573
1679
1783
1889
1997
20101
21103
22107
23131
24139
25149
26157
27163
28167
29173
30181
31191
32199
33223
34227
35229
36233
37241
38251
39257
40269
41271
42283
43293
44307
45311
46313
47317
48331
49349
50353
51359
52367
53373
54383
55397
56401

[2,3,5,7,13,17,19,23,31,37,41,47,59,61,73,79,83,
 89,97,101,103,107,131,139,149,157,163,167,173,181,
 191,199,223,227,229,233,241,251,257,269,271,283,
 293,307,311,313,317,331,349,353,359,367,373,383,
 397,401]