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A115261 as a simple table

na(n)
12
23
35
47
513
629
731
841
947
1053
1161
1279
1383
1497
15101
16113
17137
18139
19151
20157
21163
22167
23173
24179
25191
26193
27211
28223
29227
30233
31251
32269
33277
34281
35283
36311
37313
38337
39359
40379
41383
42401
43409
44421
45431
46443
47467
48487
49541
50557
51563
52577
53599
54601
55607
56641

[2,3,5,7,13,29,31,41,47,53,61,79,83,97,101,113,
 137,139,151,157,163,167,173,179,191,193,211,223,
 227,233,251,269,277,281,283,311,313,337,359,379,
 383,401,409,421,431,443,467,487,541,557,563,577,
 599,601,607,641]