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A231480 as a simple table

na(n)
12
23
35
47
517
637
753
879
989
10109
11127
12223
13263
14277
15367
16389
17433
18439
19457
20479
21521
22541
23577
24593
25709
26727
27757
28911
29953
30967
31983
321061
331097
341117
351151
361153
371297
381447
391567
401583
411601
421637
431693
441709
451801
461879
471933
481951
492017
502069
512081
522213
532269

[2,3,5,7,17,37,53,79,89,109,127,223,263,277,367,
 389,433,439,457,479,521,541,577,593,709,727,757,
 911,953,967,983,1061,1097,1117,1151,1153,1297,
 1447,1567,1583,1601,1637,1693,1709,1801,1879,1933,
 1951,2017,2069,2081,2213,2269]