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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 0 |
| 3 | 1000 |
| 4 | 1000 |
| 5 | 100000 |
| 6 | 100000 |
| 7 | 10000000 |
| 8 | 11100000 |
| 9 | 1000000000 |
| 10 | 1110000000 |
| 11 | 100000000000 |
| 12 | 111000000000 |
| 13 | 10000000000000 |
| 14 | 11100000000000 |
| 15 | 1000000000000000 |
| 16 | 1111111000000000 |
| 17 | 100000000000000000 |
| 18 | 111111100000000000 |
| 19 | 10000000000000000000 |
[1,10,0,1000,1000,100000,100000,10000000,11100000, 1000000000,1110000000,100000000000,111000000000, 10000000000000,11100000000000,1000000000000000, 1111111000000000,100000000000000000, 111111100000000000,10000000000000000000] |