| 1 |
| n |
| 1 |
| n+1 |
| 1 |
| n+2 |
| 1 |
| n2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 13 |
| 12 |
| 1 |
| k |
| 1 |
| k+1 |
| 1 |
| k+2 |
| 1 |
| k2 |
| 1 |
| k+1 |
| 1 |
| k+2 |
| 1 |
| k+3 |
| 1 |
| (k+1)2 |
| 1 |
| k |
| 1 |
| k+1 |
| 1 |
| k+2 |
| 1 |
| k+3 |
| 1 |
| k2+2k |
| 1 |
| (k+1)2 |
| 1 |
| k |
| 1 |
| k2+1 |
| 1 |
| k2+2 |
| 1 |
| (k+1)2 |
| 1 |
| k |
| 1 |
| (k+1)2 |
| 1 |
| k |
| k2-k-1 |
| k2+2k+1 |
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