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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 110 |
| 11 | 111 |
| 12 | 200 |
| 13 | 210 |
| 14 | 211 |
| 15 | 212 |
| 16 | 220 |
| 17 | 300 |
| 18 | 400 |
| 19 | 420 |
| 20 | 510 |
| 21 | 600 |
| 22 | 620 |
| 23 | 710 |
| 24 | 711 |
| 25 | 720 |
| 26 | 810 |
| 27 | 820 |
| 28 | 822 |
| 29 | 823 |
| 30 | 900 |
| 31 | 930 |
| 32 | 10000 |
| 33 | 10001 |
| 34 | 10400 |
| 35 | 11000 |
| 36 | 11001 |
| 37 | 11400 |
| 38 | 12200 |
| 39 | 13000 |
| 40 | 13500 |
| 41 | 14100 |
| 42 | 15000 |
| 43 | 15600 |
| 44 | 16000 |
| 45 | 16001 |
| 46 | 16600 |
| 47 | 17200 |
[0,1,2,3,4,5,6,7,8,9,110,111,200,210,211,212,220, 300,400,420,510,600,620,710,711,720,810,820,822, 823,900,930,10000,10001,10400,11000,11001,11400, 12200,13000,13500,14100,15000,15600,16000,16001, 16600,17200] |