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A073019 as a simple table

na(n)
12
23
34
45
57
611
713
817
919
1089
11163
12167
13233
14251
15349
16401
17757
181423
193049
203643
2111987
2219801
2326393
2432303
2535363
2635863
2736607
2836683

[2,3,4,5,7,11,13,17,19,89,163,167,233,251,349,401,
 757,1423,3049,3643,11987,19801,26393,32303,35363,
 35863,36607,36683]