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A166503 as a simple table

na(n)
15
215
317
419
523
627
749
851
953
1069
1173
1277
1385
1487
15107
16109
17115
18123
19141
20147
21151
22153
23157
24159
25163
26165
27171
28173
29177
30181
31187
32191
33199
34219
35229
36231
37233
38235
39239
40241
41243
42267
43269
44277
45279
46281
47289
48299
49319
50327
51331
52335
53337
54343
55357

[5,15,17,19,23,27,49,51,53,69,73,77,85,87,107,109,
 115,123,141,147,151,153,157,159,163,165,171,173,
 177,181,187,191,199,219,229,231,233,235,239,241,
 243,267,269,277,279,281,289,299,319,327,331,335,
 337,343,357]