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| n | a(n) |
|---|---|
| 1 | 90 |
| 2 | 190 |
| 3 | 290 |
| 4 | 390 |
| 5 | 490 |
| 6 | 590 |
| 7 | 690 |
| 8 | 790 |
| 9 | 890 |
| 10 | 909 |
| 11 | 990 |
| 12 | 1090 |
| 13 | 1190 |
| 14 | 1290 |
| 15 | 1390 |
| 16 | 1490 |
| 17 | 1590 |
| 18 | 1690 |
| 19 | 1790 |
| 20 | 1890 |
| 21 | 1909 |
| 22 | 1990 |
| 23 | 2090 |
| 24 | 2190 |
| 25 | 2290 |
| 26 | 2390 |
| 27 | 2490 |
| 28 | 2590 |
| 29 | 2690 |
| 30 | 2790 |
| 31 | 2890 |
| 32 | 2909 |
| 33 | 2990 |
| 34 | 3090 |
| 35 | 3190 |
| 36 | 3290 |
| 37 | 3390 |
| 38 | 3490 |
| 39 | 3590 |
[90,190,290,390,490,590,690,790,890,909,990,1090, 1190,1290,1390,1490,1590,1690,1790,1890,1909,1990, 2090,2190,2290,2390,2490,2590,2690,2790,2890,2909, 2990,3090,3190,3290,3390,3490,3590] |