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A023227 as a simple table

na(n)
13
27
313
431
537
643
767
873
979
10109
11139
12157
13163
14181
15193
16211
17223
18229
19241
20271
21277
22367
23373
24379
25397
26421
27433
28439
29457
30463
31523
32541
33571
34577
35601
36607
37661
38673
39709
40727
41757
42769
43787
44829
45853
46907
47937
48967
49991
501039
511063
521117
531153
541213

[3,7,13,31,37,43,67,73,79,109,139,157,163,181,193,
 211,223,229,241,271,277,367,373,379,397,421,433,
 439,457,463,523,541,571,577,601,607,661,673,709,
 727,757,769,787,829,853,907,937,967,991,1039,1063,
 1117,1153,1213]