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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 492 |
| 3 | 4992 |
| 4 | 49992 |
| 5 | 499992 |
| 6 | 4999992 |
| 7 | 49999992 |
| 8 | 499999992 |
| 9 | 4999999992 |
| 10 | 49999999992 |
| 11 | 499999999992 |
| 12 | 4999999999992 |
| 13 | 49999999999992 |
| 14 | 499999999999992 |
| 15 | 4999999999999992 |
| 16 | 49999999999999992 |
| 17 | 499999999999999992 |
[42,492,4992,49992,499992,4999992,49999992, 499999992,4999999992,49999999992,499999999992, 4999999999992,49999999999992,499999999999992, 4999999999999992,49999999999999992, 499999999999999992] |