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A215360 as a simple table

na(n)
12
23
317
419
537
653
771
889
9139
10157
11173
12191
13223
14241
15257
16293
17359
18461
19463
20479
21547
22563
23599
24631
25683
26701
27733
28751
29769
30853
31887
32937
33971
341039
351091
361109
371193
381277
391279
401381
411447
421481
431483
441499
451549
461567
471583
481601

[2,3,17,19,37,53,71,89,139,157,173,191,223,241,
 257,293,359,461,463,479,547,563,599,631,683,701,
 733,751,769,853,887,937,971,1039,1091,1109,1193,
 1277,1279,1381,1447,1481,1483,1499,1549,1567,1583,
 1601]