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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 110 |
| 3 | 1 |
| 4 | 11000 |
| 5 | 11111 |
| 6 | 1001000 |
| 7 | 10111 |
| 8 | 111110000 |
| 9 | 10001111 |
| 10 | 11101000000 |
| 11 | 1111111111 |
| 12 | 1100101000000 |
| 13 | 11110111111 |
| 14 | 111010110000000 |
| 15 | 11110101111111 |
| 16 | 11001011100000000 |
| 17 | 111010011111111 |
| 18 | 1110101110000000000 |
| 19 | 111101011111111111 |
| 20 | 110010111010000000000 |
[1,0,110,1,11000,11111,1001000,10111,111110000, 10001111,11101000000,1111111111,1100101000000, 11110111111,111010110000000,11110101111111, 11001011100000000,111010011111111, 1110101110000000000,111101011111111111, 110010111010000000000] |