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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 101 |
| 3 | 100 |
| 4 | 10001 |
| 5 | 1000 |
| 6 | 1010101 |
| 7 | 1111100 |
| 8 | 111010001 |
| 9 | 11101000 |
| 10 | 10001100101 |
| 11 | 1010001100 |
| 12 | 1011101010001 |
| 13 | 1101101101000 |
| 14 | 110100100110101 |
| 15 | 110000001111100 |
| 16 | 10101111011010001 |
| 17 | 11110001101101000 |
| 18 | 1100001011101100101 |
| 19 | 11011100100001100 |
| 20 | 110011100001011010001 |
[1,0,101,100,10001,1000,1010101,1111100,111010001, 11101000,10001100101,1010001100,1011101010001, 1101101101000,110100100110101,110000001111100, 10101111011010001,11110001101101000, 1100001011101100101,11011100100001100, 110011100001011010001] |