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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 101 |
| 3 | 10 |
| 4 | 10001 |
| 5 | 100 |
| 6 | 1010001 |
| 7 | 100100 |
| 8 | 100000001 |
| 9 | 1111100 |
| 10 | 10100000101 |
| 11 | 1001010010 |
| 12 | 1000000000001 |
| 13 | 11111111100 |
| 14 | 101000000000101 |
| 15 | 10010111010010 |
| 16 | 10000000000000001 |
| 17 | 111111111111100 |
| 18 | 1010000000000000101 |
| 19 | 100101111111110010 |
| 20 | 100000000000000010001 |
[1,0,101,10,10001,100,1010001,100100,100000001, 1111100,10100000101,1001010010,1000000000001, 11111111100,101000000000101,10010111010010, 10000000000000001,111111111111100, 1010000000000000101,100101111111110010, 100000000000000010001] |