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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 19 |
| 11 | 119 |
| 12 | 48 |
| 13 | 49 |
| 14 | 68 |
| 15 | 69 |
| 16 | 88 |
| 17 | 89 |
| 18 | 99 |
| 19 | 199 |
| 20 | 488 |
| 21 | 489 |
| 22 | 499 |
| 23 | 689 |
| 24 | 699 |
| 25 | 889 |
| 26 | 899 |
| 27 | 999 |
| 28 | 1999 |
| 29 | 4889 |
| 30 | 4899 |
| 31 | 4999 |
| 32 | 6899 |
| 33 | 6999 |
| 34 | 8899 |
| 35 | 8999 |
| 36 | 9999 |
| 37 | 19999 |
| 38 | 48899 |
| 39 | 48999 |
| 40 | 49999 |
| 41 | 68999 |
| 42 | 69999 |
| 43 | 88999 |
| 44 | 89999 |
| 45 | 99999 |
| 46 | 199999 |
| 47 | 488999 |
[1,2,3,4,5,6,7,8,9,19,119,48,49,68,69,88,89,99, 199,488,489,499,689,699,889,899,999,1999,4889, 4899,4999,6899,6999,8899,8999,9999,19999,48899, 48999,49999,68999,69999,88999,89999,99999,199999, 488999] |