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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 71 |
| 3 | 271 |
| 4 | 3631 |
| 5 | 58231 |
| 6 | 209431 |
| 7 | 4188791 |
| 8 | 96342391 |
| 9 | 17041023991 |
| 10 | 72642169591 |
| 11 | 2324549427191 |
| 12 | 1143053268797439991 |
| 13 | 52580450364682239991 |
| 14 | 262134882788466687991 |
| 15 | 694657439389436723199991 |
| 16 | 38900816605808456499199991 |
| 17 | 2295148179742698933452799991 |
[19,71,271,3631,58231,209431,4188791,96342391, 17041023991,72642169591,2324549427191, 1143053268797439991,52580450364682239991, 262134882788466687991,694657439389436723199991, 38900816605808456499199991, 2295148179742698933452799991] |