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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 11 |
| 3 | 111 |
| 4 | 1111 |
| 5 | 11101 |
| 6 | 111010 |
| 7 | 1111101 |
| 8 | 11111110 |
| 9 | 111010111 |
| 10 | 1110101011 |
| 11 | 11111010101 |
| 12 | 111111101010 |
| 13 | 1110101110101 |
| 14 | 11101010101010 |
| 15 | 111110101010101 |
| 16 | 1111111010101010 |
| 17 | 11101011101010101 |
| 18 | 111010101010101010 |
| 19 | 1111101010101010101 |
| 20 | 11111110101010101010 |
[1,0,11,111,1111,11101,111010,1111101,11111110, 111010111,1110101011,11111010101,111111101010, 1110101110101,11101010101010,111110101010101, 1111111010101010,11101011101010101, 111010101010101010,1111101010101010101, 11111110101010101010] |