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A113304 as a simple table

na(n)
13
27
317
419
541
643
747
873
9107
10109
11113
12131
13173
14179
15191
16193
17199
18233
19269
20277
21281
22283
23293
24307
25311
26347
27373
28383
29401
30409
31419
32421
33439
34443
35457
36467
37503
38509
39521
40547
41563
42569
43593
44613
45617
46631
47653
48673
49691
50701
51709
52719
53739
54743

[3,7,17,19,41,43,47,73,107,109,113,131,173,179,
 191,193,199,233,269,277,281,283,293,307,311,347,
 373,383,401,409,419,421,439,443,457,467,503,509,
 521,547,563,569,593,613,617,631,653,673,691,701,
 709,719,739,743]