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A078752 as a simple table

na(n)
13
23
35
45
511
67
713
811
913
1011
1123
1213
1329
1417
1517
1617
1737
1819
1937
2023
2129
2223
2347
2425
2541
2629
2737
2829
2959
3031
3161
3237
3341
3437
3553
3637
3773
3841
3953
4041
4183
4243
4389
4447
4553
4647
4797
4849
4989
5053
5167
5253
53107
5455
5583
5659
5773
5859
59127
6061
61127
6267
6373
6467
6597
6667
67137
6871
6989
7071

[3,3,5,5,11,7,13,11,13,11,23,13,29,17,17,17,37,19,
 37,23,29,23,47,25,41,29,37,29,59,31,61,37,41,37,
 53,37,73,41,53,41,83,43,89,47,53,47,97,49,89,53,
 67,53,107,55,83,59,73,59,127,61,127,67,73,67,97,
 67,137,71,89,71]