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A216770 as a simple table

na(n)
15
27
311
413
523
629
731
837
941
1047
1153
1261
1371
1479
15101
16103
17109
18127
19131
20149
21151
22157
23167
24173
25181
26191
27197
28199
29211
30223
31229
32239
33251
34263
35269
36271
37277
38281
39293
40311
41317
42331
43349
44359
45367
46373
47383
48389
49397
50401
51421
52431
53439
54461
55463
56479

[5,7,11,13,23,29,31,37,41,47,53,61,71,79,101,103,
 109,127,131,149,151,157,167,173,181,191,197,199,
 211,223,229,239,251,263,269,271,277,281,293,311,
 317,331,349,359,367,373,383,389,397,401,421,431,
 439,461,463,479]