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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 11 |
| 3 | 1 |
| 4 | 1100 |
| 5 | 11 |
| 6 | 111001 |
| 7 | 10110 |
| 8 | 11000000 |
| 9 | 111111 |
| 10 | 1110001001 |
| 11 | 101110110 |
| 12 | 110000101000 |
| 13 | 1111000111 |
| 14 | 11100010111001 |
| 15 | 1011101010110 |
| 16 | 1100001000001000 |
| 17 | 11100011110111 |
| 18 | 111000011100100001 |
| 19 | 10111001000001110 |
| 20 | 11000010010111110000 |
| 21 | 111101101010000111 |
[1,0,11,1,1100,11,111001,10110,11000000,111111, 1110001001,101110110,110000101000,1111000111, 11100010111001,1011101010110,1100001000001000, 11100011110111,111000011100100001, 10111001000001110,11000010010111110000, 111101101010000111] |