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A221868 as a simple table

na(n)
12
25
311
413
529
631
717
819
943
107
1137
1241
1371
1447
1567
1689
173
18101
1923
20109
2159
2283
23103
2473
25107
26157
2753
28127
29149
3061
31131
32139
3379
34163
35191
36193
3797
38113
39137
40167
41211
42181
43151
44197
45199
46173
47223
48239
49227
50179
51241
52251
53229
54257
55313
56233
57263
58277
59271
60283
61307
62347
63269
64293

[2,5,11,13,29,31,17,19,43,7,37,41,71,47,67,89,3,
 101,23,109,59,83,103,73,107,157,53,127,149,61,131,
 139,79,163,191,193,97,113,137,167,211,181,151,197,
 199,173,223,239,227,179,241,251,229,257,313,233,
 263,277,271,283,307,347,269,293]