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A157974 as a simple table

na(n)
13
25
313
419
529
631
741
853
959
1061
1171
1273
13101
14109
15113
16131
17151
18173
19199
20211
21223
22239
23241
24251
25263
26283
27293
28313
29389
30409
31419
32439
33449
34491
35503
36521
37523
38571
39593
40631
41641
42643
43659
44673
45701
46733
47769
48809
49811
50823
51839
52853
53883
54929
55953

[3,5,13,19,29,31,41,53,59,61,71,73,101,109,113,
 131,151,173,199,211,223,239,241,251,263,283,293,
 313,389,409,419,439,449,491,503,521,523,571,593,
 631,641,643,659,673,701,733,769,809,811,823,839,
 853,883,929,953]