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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 19 |
| 4 | 160019 |
| 5 | 1049920019 |
| 6 | 1050730019 |
| 7 | 1051540019 |
| 8 | 12910750019 |
| 9 | 13960510019 |
| 10 | 14167870019 |
| 11 | 67252030019 |
| 12 | 67252840019 |
| 13 | 67318450019 |
| 14 | 196918450019 |
| 15 | 197968210019 |
| 16 | 568118770019 |
| 17 | 568119580019 |
| 18 | 938270140019 |
| 19 | 938477500019 |
[2,3,19,160019,1049920019,1050730019,1051540019, 12910750019,13960510019,14167870019,67252030019, 67252840019,67318450019,196918450019,197968210019, 568118770019,568119580019,938270140019, 938477500019] |