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A066072 as a simple table

na(n)
12
23
33
45
57
65
75
87
97
1013
1111
1213
1319
1413
1517
1617
1713
1819
1917
2013
2123
2217
2343
2419
2541
2637
2729
2817
2931
3037
3137
3241
3337
3461
3541
3643
3741
3873
3961
4047
4173
4243
4361
4441
4553
4637
4741
4873
4937
5089
5173
5259
5397
5461
5561
56101
5737
5841
59109
6067
6173
6271
63113
6473
6573
6641
6773
6897
6961
7079
7183

[2,3,3,5,7,5,5,7,7,13,11,13,19,13,17,17,13,19,17,
 13,23,17,43,19,41,37,29,17,31,37,37,41,37,61,41,
 43,41,73,61,47,73,43,61,41,53,37,41,73,37,89,73,
 59,97,61,61,101,37,41,109,67,73,71,113,73,73,41,
 73,97,61,79,83]