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A272404 as a simple table

na(n)
17
219
331
437
543
661
767
873
979
1097
11103
12109
13127
14139
15151
16157
17163
18181
19193
20199
21223
22241
23277
24349
25463
26601

[7,19,31,37,43,61,67,73,79,97,103,109,127,139,151,
 157,163,181,193,199,223,241,277,349,463,601]