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A038618 as a simple table

na(n)
12
23
35
47
511
613
717
819
923
1029
1131
1237
1341
1443
1547
1653
1759
1861
1967
2071
2173
2279
2383
2489
2597
26113
27127
28131
29137
30139
31149
32151
33157
34163
35167
36173
37179
38181
39191
40193
41197
42199
43211
44223
45227
46229
47233
48239
49241
50251
51257
52263
53269
54271
55277
56281
57283
58293

[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,
 61,67,71,73,79,83,89,97,113,127,131,137,139,149,
 151,157,163,167,173,179,181,191,193,197,199,211,
 223,227,229,233,239,241,251,257,263,269,271,277,
 281,283,293]