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A194598 as a simple table

na(n)
12
23
313
419
531
643
753
861
971
1073
11101
12103
13109
14113
15131
16139
17151
18157
19173
20181
21191
22193
23199
24229
25233
26239
27241
28251
29269
30271
31283
32293
33311
34313
35349
36353
37373
38379
39409
40419
41421
42433
43439
44443
45463
46491
47499
48509
49523
50571
51577
52593
53599
54601

[2,3,13,19,31,43,53,61,71,73,101,103,109,113,131,
 139,151,157,173,181,191,193,199,229,233,239,241,
 251,269,271,283,293,311,313,349,353,373,379,409,
 419,421,433,439,443,463,491,499,509,523,571,577,
 593,599,601]