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A216774 as a simple table

na(n)
15
27
313
423
529
631
737
847
953
1059
1161
1271
1379
14101
15103
16109
17127
18149
19151
20157
21167
22173
23181
24191
25197
26199
27223
28229
29233
30239
31263
32269
33271
34277
35293
36311
37317
38349
39359
40367
41373
42383
43389
44397
45421
46431
47439
48461
49463
50479
51487
52503
53509
54523

[5,7,13,23,29,31,37,47,53,59,61,71,79,101,103,109,
 127,149,151,157,167,173,181,191,197,199,223,229,
 233,239,263,269,271,277,293,311,317,349,359,367,
 373,383,389,397,421,431,439,461,463,479,487,503,
 509,523]