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A086040 as a simple table

na(n)
17
247
353
467
597
6101
7149
8401
9431
10479
11487
12757
13827
14887
151061
161171
171409
181429
191543
201721
211789
221811
231889
241987
252099
262113
272137
282273
292689
302719
312857
323203
333571
343613
353623
363761
373853
383917
393929
404007
414217
424441
434943
445039
455209
465281
475449

[7,47,53,67,97,101,149,401,431,479,487,757,827,
 887,1061,1171,1409,1429,1543,1721,1789,1811,1889,
 1987,2099,2113,2137,2273,2689,2719,2857,3203,3571,
 3613,3623,3761,3853,3917,3929,4007,4217,4441,4943,
 5039,5209,5281,5449]