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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 111 |
| 3 | 0 |
| 4 | 11111 |
| 5 | 0 |
| 6 | 1111111 |
| 7 | 0 |
| 8 | 111111111 |
| 9 | 0 |
| 10 | 11111111111 |
| 11 | 0 |
| 12 | 1111111111111 |
| 13 | 0 |
| 14 | 111111111111111 |
| 15 | 0 |
| 16 | 11111111111111111 |
| 17 | 0 |
| 18 | 1111111111111111111 |
| 19 | 0 |
| 20 | 111111111111111111111 |
| 21 | 0 |
| 22 | 11111111111111111111111 |
| 23 | 0 |
| 24 | 1111111111111111111111111 |
| 25 | 0 |
[1,10,111,0,11111,0,1111111,0,111111111,0, 11111111111,0,1111111111111,0,111111111111111,0, 11111111111111111,0,1111111111111111111,0, 111111111111111111111,0,11111111111111111111111,0, 1111111111111111111111111,0] |