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A038603 as a simple table

na(n)
12
23
35
47
523
629
737
843
947
1053
1159
1267
1373
1479
1583
1689
1797
18223
19227
20229
21233
22239
23257
24263
25269
26277
27283
28293
29307
30337
31347
32349
33353
34359
35367
36373
37379
38383
39389
40397
41409
42433
43439
44443
45449
46457
47463
48467
49479
50487
51499
52503
53509
54523
55547
56557

[2,3,5,7,23,29,37,43,47,53,59,67,73,79,83,89,97,
 223,227,229,233,239,257,263,269,277,283,293,307,
 337,347,349,353,359,367,373,379,383,389,397,409,
 433,439,443,449,457,463,467,479,487,499,503,509,
 523,547,557]