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A248219 as a simple table

na(n)
11
23
37
419
521
631
737
843
957
1093
11111
12129
13133
14157
15217
16259
17301
18307
19313
20399
21463
22471
23499
24589
25613
26651
27703
28777
29817
30903
31921
32939
33967
341099
351147
361333
371389
381497
391591
401767
411839
422109
432149
442191
452451
462683
472901
482983
493241
503297
513441

[1,3,7,19,21,31,37,43,57,93,111,129,133,157,217,
 259,301,307,313,399,463,471,499,589,613,651,703,
 777,817,903,921,939,967,1099,1147,1333,1389,1497,
 1591,1767,1839,2109,2149,2191,2451,2683,2901,2983,
 3241,3297,3441]