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A071696 as a simple table

na(n)
17
219
331
443
5103
6139
7151
8199
9271
10283
11463
12523
13571
14619
15643
16811
17823
18859
19883
201051
211063
221231
231279
241291
251303
261483
271699
281723
291879
301951
311999
322083
332131
342143
352239
362311
372383
382551
392659
402731
412791
422803
432971

[7,19,31,43,103,139,151,199,271,283,463,523,571,
 619,643,811,823,859,883,1051,1063,1231,1279,1291,
 1303,1483,1699,1723,1879,1951,1999,2083,2131,2143,
 2239,2311,2383,2551,2659,2731,2791,2803,2971]