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A066651 as a simple table

na(n)
13
25
37
411
513
623
729
831
943
1047
1153
1259
1361
1467
1571
1679
1783
18103
19107
20131
21139
22149
23157
24167
25173
26179
27191
28211
29223
30227
31229
32239
33263
34269
35277
36283
37293
38311
39317
40331
41347
42349
43359
44367
45373
46383
47389
48419
49421
50431

[3,5,7,11,13,23,29,31,43,47,53,59,61,67,71,79,83,
 103,107,131,139,149,157,167,173,179,191,211,223,
 227,229,239,263,269,277,283,293,311,317,331,347,
 349,359,367,373,383,389,419,421,431]