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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 101 |
| 3 | 0 |
| 4 | 11101 |
| 5 | 1000 |
| 6 | 1010101 |
| 7 | 101000 |
| 8 | 100000101 |
| 9 | 11101000 |
| 10 | 10101010101 |
| 11 | 110101000 |
| 12 | 1101100000101 |
| 13 | 1011011101000 |
| 14 | 101010101 |
| 15 | 1111100110101000 |
| 16 | 1001100000101 |
| 17 | 111010001011101000 |
| 18 | 11101010001010101 |
| 19 | 10101000101010101000 |
| 20 | 1100101111100000101 |
[1,0,101,0,11101,1000,1010101,101000,100000101, 11101000,10101010101,110101000,1101100000101, 1011011101000,101010101,1111100110101000, 1001100000101,111010001011101000, 11101010001010101,10101000101010101000, 1100101111100000101] |