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A087054 as a simple table

na(n)
131
241
359
461
571
6101
7103
8113
9131
10151
11167
12191
13199
14211
15227
16239
17241
18251
19263
20269
21271
22281
23293
24311
25331
26347
27359
28383
29401
30419
31421
32431
33439
34461
35467
36479
37487
38491
39503
40521
41541
42563
43571
44587
45599
46607
47617
48631
49641
50647
51653
52661
53691

[31,41,59,61,71,101,103,113,131,151,167,191,199,
 211,227,239,241,251,263,269,271,281,293,311,331,
 347,359,383,401,419,421,431,439,461,467,479,487,
 491,503,521,541,563,571,587,599,607,617,631,641,
 647,653,661,691]