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A038913 as a simple table

na(n)
13
27
311
437
541
647
753
867
971
1073
1183
12101
13107
14127
15137
16139
17149
18151
19157
20173
21181
22197
23211
24223
25229
26233
27263
28269
29271
30293
31307
32317
33337
34349
35359
36367
37373
38379
39397
40419
41433
42443
43491
44509
45521

[3,7,11,37,41,47,53,67,71,73,83,101,107,127,137,
 139,149,151,157,173,181,197,211,223,229,233,263,
 269,271,293,307,317,337,349,359,367,373,379,397,
 419,433,443,491,509,521]