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A236999 as a simple table

na(n)
11
21
31
413
519
613
717
843
953
101
1119
1289
13103
1459
1567
16151
17169
1847
1913
20229
21251
22137
23149
24323
25349
2647
27101
28433
29463
30247
31263
32559
33593
34157
3583
36701
37739
38389
39409
40859
41901
4259
43247
441033
451079
46563
47587
481223
491273
50331
5143
521429
531483

[1,1,1,13,19,13,17,43,53,1,19,89,103,59,67,151,
 169,47,13,229,251,137,149,323,349,47,101,433,463,
 247,263,559,593,157,83,701,739,389,409,859,901,59,
 247,1033,1079,563,587,1223,1273,331,43,1429,1483]