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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 98 |
| 4 | 99 |
| 5 | 100 |
| 6 | 9998 |
| 7 | 9999 |
| 8 | 10000 |
| 9 | 999998 |
| 10 | 999999 |
| 11 | 1000000 |
| 12 | 99999998 |
| 13 | 99999999 |
| 14 | 100000000 |
| 15 | 9999999998 |
| 16 | 9999999999 |
| 17 | 10000000000 |
| 18 | 999999999998 |
| 19 | 999999999999 |
| 20 | 1000000000000 |
| 21 | 99999999999998 |
| 22 | 99999999999999 |
| 23 | 100000000000000 |
| 24 | 9999999999999998 |
| 25 | 9999999999999999 |
[0,1,98,99,100,9998,9999,10000,999998,999999, 1000000,99999998,99999999,100000000,9999999998, 9999999999,10000000000,999999999998,999999999999, 1000000000000,99999999999998,99999999999999, 100000000000000,9999999999999998,9999999999999999] |