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A181938 as a simple table

na(n)
17
213
319
443
597
6103
7109
8127
9139
10181
11193
12229
13241
14283
15307
16313
17349
18397
19409
20421
21457
22463
23487
24499
25643
26691
27709
28769
29787
30811
31823
32829
33853
34859
35877
36883
37907
38919
39937
40967
411021
421051
431093
441153
451171
461279
471303
481423
491429
501447
511483

[7,13,19,43,97,103,109,127,139,181,193,229,241,
 283,307,313,349,397,409,421,457,463,487,499,643,
 691,709,769,787,811,823,829,853,859,877,883,907,
 919,937,967,1021,1051,1093,1153,1171,1279,1303,
 1423,1429,1447,1483]