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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 96 |
| 3 | 994 |
| 4 | 9992 |
| 5 | 99990 |
| 6 | 999988 |
| 7 | 9999986 |
| 8 | 99999984 |
| 9 | 999999982 |
| 10 | 9999999980 |
| 11 | 99999999978 |
| 12 | 999999999976 |
| 13 | 9999999999974 |
| 14 | 99999999999972 |
| 15 | 999999999999970 |
| 16 | 9999999999999968 |
| 17 | 99999999999999966 |
| 18 | 999999999999999964 |
[1,8,96,994,9992,99990,999988,9999986,99999984, 999999982,9999999980,99999999978,999999999976, 9999999999974,99999999999972,999999999999970, 9999999999999968,99999999999999966, 999999999999999964] |