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| n | a(n) |
|---|---|
| 0 | 1000000000 |
| 1 | 100000000 |
| 2 | 10000000 |
| 3 | 1000000 |
| 4 | 100000 |
| 5 | 10000 |
| 6 | 1000 |
| 7 | 100 |
| 8 | 10 |
| 9 | 1 |
| 10 | 1200000000 |
| 11 | 1200000000 |
| 12 | 210000000 |
| 13 | 201000000 |
| 14 | 200100000 |
| 15 | 200010000 |
| 16 | 200001000 |
| 17 | 200000100 |
| 18 | 200000010 |
| 19 | 200000001 |
| 20 | 1020000000 |
| 21 | 120000000 |
| 22 | 120000000 |
| 23 | 21000000 |
| 24 | 20100000 |
| 25 | 20010000 |
| 26 | 20001000 |
| 27 | 20000100 |
| 28 | 20000010 |
| 29 | 20000001 |
[1000000000,100000000,10000000,1000000,100000, 10000,1000,100,10,1,1200000000,1200000000, 210000000,201000000,200100000,200010000,200001000, 200000100,200000010,200000001,1020000000, 120000000,120000000,21000000,20100000,20010000, 20001000,20000100,20000010,20000001] |