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A068492 as a simple table

na(n)
111
213
317
419
571
673
789
8101
9103
10107
11131
12137
13149
14167
15173
16191
17197
18199
19223
20229
21233
22283
23307
24311
25313
26331
27337
28359
29383
30401
31433
32439
33461
34463
35491
36523
37569
38593
39631
40641
41647
42659
43709
44733
45743
46773
47809
48823
49859
50907
51911
52919
53947

[11,13,17,19,71,73,89,101,103,107,131,137,149,167,
 173,191,197,199,223,229,233,283,307,311,313,331,
 337,359,383,401,433,439,461,463,491,523,569,593,
 631,641,647,659,709,733,743,773,809,823,859,907,
 911,919,947]