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A175873 as a simple table

na(n)
113
217
319
423
537
647
767
889
9103
10107
11109
12113
13131
14151
15173
16193
17199
18233
19239
20269
21277
22317
23353
24359
25373
26389
27409
28431
29433
30443
31449
32463
33467
34499
35503
36563
37577
38593
39607
40619
41653
42709
43719
44727
45773
46811
47823
48829
49863
50881
51887
52911
53937
54947
55997
561033

[13,17,19,23,37,47,67,89,103,107,109,113,131,151,
 173,193,199,233,239,269,277,317,353,359,373,389,
 409,431,433,443,449,463,467,499,503,563,577,593,
 607,619,653,709,719,727,773,811,823,829,863,881,
 887,911,937,947,997,1033]