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A301591 as a simple table

na(n)
113
237
341
461
573
689
797
8109
9113
10157
11181
12193
13233
14241
15277
16281
17313
18337
19349
20353
21397
22401
23409
24421
25433
26449
27457
28461
29521
30541
31577
32593
33601
34613
35617
36641
37661
38673
39701
40733
41757
42761
43769
44821
45829
46877
47881
48929
49937
50953
51997
521009
531013
541021
551033
561049

[13,37,41,61,73,89,97,109,113,157,181,193,233,241,
 277,281,313,337,349,353,397,401,409,421,433,449,
 457,461,521,541,577,593,601,613,617,641,661,673,
 701,733,757,761,769,821,829,877,881,929,937,953,
 997,1009,1013,1021,1033,1049]