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A180641 as a simple table

na(n)
17
217
319
431
541
653
771
879
989
1097
11101
12109
13127
14151
15163
16181
17191
18197
19199
20239
21241
22251
23257
24271
25307
26337
27349
28379
29401
30419
31431
32433
33449
34461
35463
36487
37491
38499
39521
40571
41577
42593
43599
44601
45631
46641
47647
48659
49683
50701
51727
52751
53769
54809

[7,17,19,31,41,53,71,79,89,97,101,109,127,151,163,
 181,191,197,199,239,241,251,257,271,307,337,349,
 379,401,419,431,433,449,461,463,487,491,499,521,
 571,577,593,599,601,631,641,647,659,683,701,727,
 751,769,809]