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A270999 as a simple table

na(n)
17
211
313
417
519
697
7101
8103
9107
10109
111867
121871
131873
141877
151879
163457
173461
183463
193467
203469
215647
225651
235653
245657
255659
2615727
2715731
2815733
2915737
3015739
3116057
3216061
3316063
3416067
3516069
3619417
3719421
3819423
3919427
4019429
4143777
4243781
4343783
4443787
4543789

[7,11,13,17,19,97,101,103,107,109,1867,1871,1873,
 1877,1879,3457,3461,3463,3467,3469,5647,5651,5653,
 5657,5659,15727,15731,15733,15737,15739,16057,
 16061,16063,16067,16069,19417,19421,19423,19427,
 19429,43777,43781,43783,43787,43789]