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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 100 |
| 3 | 1000 |
| 4 | 10000 |
| 5 | 100000 |
| 6 | 1000000 |
| 7 | 10000000 |
| 8 | 101100000 |
| 9 | 1011000000 |
| 10 | 10110000000 |
| 11 | 101100000000 |
| 12 | 1011100000000 |
| 13 | 10111000000000 |
| 14 | 101110000000000 |
| 15 | 1011100000000000 |
| 16 | 10111000000000000 |
| 17 | 101111000000000000 |
| 18 | 1011110000000000000 |
| 19 | 10111111000000000000 |
[1,10,100,1000,10000,100000,1000000,10000000, 101100000,1011000000,10110000000,101100000000, 1011100000000,10111000000000,101110000000000, 1011100000000000,10111000000000000, 101111000000000000,1011110000000000000, 10111111000000000000] |