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A166733 as a simple table

na(n)
13
27
39
413
527
631
737
839
949
1051
1157
1263
1367
1473
1579
1681
1791
1893
1997
2099
21103
22109
23117
24123
25129
26151
27153
28163
29171
30181
31187
32193
33201
34213
35217
36223
37229
38231
39237
40249
41259
42277
43279
44283
45289
46291
47297
48301
49303
50307
51319
52321
53327
54361
55367
56373
57381

[3,7,9,13,27,31,37,39,49,51,57,63,67,73,79,81,91,
 93,97,99,103,109,117,123,129,151,153,163,171,181,
 187,193,201,213,217,223,229,231,237,249,259,277,
 279,283,289,291,297,301,303,307,319,321,327,361,
 367,373,381]