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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 8 |
| 4 | 9 |
| 5 | 10 |
| 6 | 20 |
| 7 | 30 |
| 8 | 40 |
| 9 | 50 |
| 10 | 60 |
| 11 | 70 |
| 12 | 80 |
| 13 | 90 |
| 14 | 100 |
| 15 | 200 |
| 16 | 300 |
| 17 | 400 |
| 18 | 500 |
| 19 | 600 |
| 20 | 700 |
| 21 | 800 |
| 22 | 910 |
| 23 | 1000 |
| 24 | 1090 |
| 25 | 2000 |
| 26 | 3000 |
| 27 | 4000 |
| 28 | 5000 |
| 29 | 6000 |
| 30 | 7000 |
| 31 | 8000 |
| 32 | 9000 |
| 33 | 9010 |
| 34 | 9100 |
| 35 | 10000 |
| 36 | 10090 |
| 37 | 10900 |
| 38 | 20000 |
| 39 | 30000 |
| 40 | 40000 |
| 41 | 50000 |
| 42 | 60000 |
| 43 | 70000 |
| 44 | 80000 |
| 45 | 90000 |
| 46 | 90010 |
| 47 | 90100 |
| 48 | 91000 |
[4,6,8,9,10,20,30,40,50,60,70,80,90,100,200,300, 400,500,600,700,800,910,1000,1090,2000,3000,4000, 5000,6000,7000,8000,9000,9010,9100,10000,10090, 10900,20000,30000,40000,50000,60000,70000,80000, 90000,90010,90100,91000] |