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A216881 as a simple table

na(n)
12
23
35
47
511
613
717
819
923
1031
1137
1241
1347
1453
1559
1661
1767
1873
1979
2083
2189
2297
23101
24103
25107
26109
27131
28137
29139
30149
31151
32157
33163
34167
35173
36179
37181
38191
39193
40199
41223
42227
43229
44233
45241
46251
47257
48263
49269
50271
51277
52283
53293
54307
55311
56313
57317

[2,3,5,7,11,13,17,19,23,31,37,41,47,53,59,61,67,
 73,79,83,89,97,101,103,107,109,131,137,139,149,
 151,157,163,167,173,179,181,191,193,199,223,227,
 229,233,241,251,257,263,269,271,277,283,293,307,
 311,313,317]