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A084198 as a simple table

na(n)
15
27
319
443
567
697
7163
8181
9211
10283
11331
12349
13523
14547
15601
16691
17787
18853
19907
20937
211021
221051
231123
241171
251429
261531
271549
281723
291777
301867
312011
322029
332053
342083
352113
362251
372281
382347
392371
402467
412521
422707
432731
442749
452803
462971
473067

[5,7,19,43,67,97,163,181,211,283,331,349,523,547,
 601,691,787,853,907,937,1021,1051,1123,1171,1429,
 1531,1549,1723,1777,1867,2011,2029,2053,2083,2113,
 2251,2281,2347,2371,2467,2521,2707,2731,2749,2803,
 2971,3067]