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A178943 as a simple table

na(n)
12
23
37
411
513
617
719
823
929
1031
1137
1241
1343
1447
1559
1661
1767
1871
1973
2079
2183
2289
2397
24101
25103
26107
27109
28113
29127
30131
31137
32139
33149
34151
35163
36167
37179
38181
39191
40193
41197
42199
43223
44227
45229
46233
47239
48241
49251
50269
51271
52277
53281
54283
55293

[2,3,7,11,13,17,19,23,29,31,37,41,43,47,59,61,67,
 71,73,79,83,89,97,101,103,107,109,113,127,131,137,
 139,149,151,163,167,179,181,191,193,197,199,223,
 227,229,233,239,241,251,269,271,277,281,283,293]