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A238647 as a simple table

na(n)
12
23
35
47
511
613
717
819
929
1031
1141
1243
1347
1459
1561
1667
1771
1879
1983
2089
2197
22101
23103
24107
25109
26127
27131
28139
29149
30151
31157
32163
33167
34179
35181
36191
37199
38227
39239
40251
41257
42263
43269
44277
45281
46307
47349
48401
49409
50419
51421
52431
53439
54443
55449
56457
57461

[2,3,5,7,11,13,17,19,29,31,41,43,47,59,61,67,71,
 79,83,89,97,101,103,107,109,127,131,139,149,151,
 157,163,167,179,181,191,199,227,239,251,257,263,
 269,277,281,307,349,401,409,419,421,431,439,443,
 449,457,461]