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A216487 as a simple table

na(n)
23
37
45
511
67
729
817
919
1011
1123
1213
1353
1429
1531
1617
1710949
1819
19108301
2041
2143
2223
2347
2473
25101
2653
27109
2829
2959
3031
31373
32257
3367
34103
3571
3637
37149
38191
3979
4041
4183
4243
43173
4489
45181
4647
47659
4897
49197
50101
51103
5253
53107
54109
55881
56113
57229
5859
59709
6061
61977

[3,7,5,11,7,29,17,19,11,23,13,53,29,31,17,10949,
 19,108301,41,43,23,47,73,101,53,109,29,59,31,373,
 257,67,103,71,37,149,191,79,41,83,43,173,89,181,
 47,659,97,197,101,103,53,107,109,881,113,229,59,
 709,61,977]