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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 11 |
| 3 | 11 |
| 4 | 1011 |
| 5 | 1 |
| 6 | 111110 |
| 7 | 110110 |
| 8 | 10101110 |
| 9 | 100 |
| 10 | 1111111011 |
| 11 | 1101111011 |
| 12 | 101011101011 |
| 13 | 11000011 |
| 14 | 11111111111011 |
| 15 | 11010111011001 |
| 16 | 1010101111111110 |
| 17 | 111111110 |
| 18 | 111111111111111010 |
| 19 | 110111010101011000 |
| 20 | 10101111101010111011 |
| 21 | 1111100000011011 |
[1,0,11,11,1011,1,111110,110110,10101110,100, 1111111011,1101111011,101011101011,11000011, 11111111111011,11010111011001,1010101111111110, 111111110,111111111111111010,110111010101011000, 10101111101010111011,1111100000011011] |