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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 100 |
| 3 | 1111 |
| 4 | 100 |
| 5 | 111011 |
| 6 | 0 |
| 7 | 11101111 |
| 8 | 0 |
| 9 | 1011111111 |
| 10 | 10001000000 |
| 11 | 111111111111 |
| 12 | 101000000 |
| 13 | 11101010111111 |
| 14 | 10100000000 |
| 15 | 1111101111111111 |
| 16 | 100000100000000 |
| 17 | 111111101011111111 |
| 18 | 10100010000000000 |
| 19 | 11101010101111111111 |
| 20 | 10101000000000000 |
[1,10,100,1111,100,111011,0,11101111,0,1011111111, 10001000000,111111111111,101000000,11101010111111, 10100000000,1111101111111111,100000100000000, 111111101011111111,10100010000000000, 11101010101111111111,10101000000000000] |