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A195870 as a simple table

na(n)
17
219
313
437
561
631
791
843
9127
10169
1149
1273
13217
1491
15271
16331
17133
18397
19109
20157
21469
22547
23211
24631
25241
26721
2767
28193
29817
30307
31343
3279
33103
34301
35421
36463

[7,19,13,37,61,31,91,43,127,169,49,73,217,91,271,
 331,133,397,109,157,469,547,211,631,241,721,67,
 193,817,307,343,79,103,301,421,463]