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A038947 as a simple table

na(n)
12
23
35
411
513
617
719
831
941
1043
1153
1259
1361
1497
15103
16109
17139
18167
19179
20199
21211
22223
23233
24239
25251
26263
27269
28277
29281
30283
31307
32313
33317
34349
35359
36367
37373
38389
39419
40431
41433
42443
43463
44467
45479
46487

[2,3,5,11,13,17,19,31,41,43,53,59,61,97,103,109,
 139,167,179,199,211,223,233,239,251,263,269,277,
 281,283,307,313,317,349,359,367,373,389,419,431,
 433,443,463,467,479,487]