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A027703 as a simple table

na(n)
15
217
329
443
553
671
789
8101
9113
10149
11163
12197
13269
14281
15293
16311
17317
18359
19373
20389
21401
22449
23461
24479
25509
26523
27547
28571
29599
30619
31643
32673
33691
34739
35751
36773
37797
38821
39857
40863
41881
42907
43937
44983
451013
461031
471049
481061
491103
501117
511151

[5,17,29,43,53,71,89,101,113,149,163,197,269,281,
 293,311,317,359,373,389,401,449,461,479,509,523,
 547,571,599,619,643,673,691,739,751,773,797,821,
 857,863,881,907,937,983,1013,1031,1049,1061,1103,
 1117,1151]