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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 45 |
| 2 | 495 |
| 3 | 4995 |
| 4 | 49995 |
| 5 | 499995 |
| 6 | 4999995 |
| 7 | 49999995 |
| 8 | 499999995 |
| 9 | 4999999995 |
| 10 | 49999999995 |
| 11 | 499999999995 |
| 12 | 4999999999995 |
| 13 | 49999999999995 |
| 14 | 499999999999995 |
| 15 | 4999999999999995 |
| 16 | 49999999999999995 |
| 17 | 499999999999999995 |
| 18 | 4999999999999999995 |
| 19 | 49999999999999999995 |
| 20 | 499999999999999999995 |
[0,45,495,4995,49995,499995,4999995,49999995, 499999995,4999999995,49999999995,499999999995, 4999999999995,49999999999995,499999999999995, 4999999999999995,49999999999999995, 499999999999999995,4999999999999999995, 49999999999999999995,499999999999999999995] |