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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 110 |
| 3 | 1 |
| 4 | 11000 |
| 5 | 1111 |
| 6 | 1001000 |
| 7 | 11110111 |
| 8 | 1110000 |
| 9 | 1101101111 |
| 10 | 101100000 |
| 11 | 111100011111 |
| 12 | 10010000000 |
| 13 | 11110101111111 |
| 14 | 1011100000000 |
| 15 | 1111010011111111 |
| 16 | 101110000000000 |
| 17 | 111111011111111111 |
| 18 | 11101010000000000 |
| 19 | 11000111101111111111 |
| 20 | 101111100000000000 |
[1,10,110,1,11000,1111,1001000,11110111,1110000, 1101101111,101100000,111100011111,10010000000, 11110101111111,1011100000000,1111010011111111, 101110000000000,111111011111111111, 11101010000000000,11000111101111111111, 101111100000000000] |