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A172015 as a simple table

na(n)
123
225
347
449
553
655
783
885
989
1091
11113
12115
13131
14133
15167
16169
17173
18175
19233
20235
21251
22253
23257
24259
25263
26265
27293
28295
29317
30319
31353
32355
33359
34361
35383
36385
37389
38391
39401
40403
41443
42445
43449
44451
45467
46469
47479
48481
49491
50493
51503
52505
53509
54511

[23,25,47,49,53,55,83,85,89,91,113,115,131,133,
 167,169,173,175,233,235,251,253,257,259,263,265,
 293,295,317,319,353,355,359,361,383,385,389,391,
 401,403,443,445,449,451,467,469,479,481,491,493,
 503,505,509,511]