| n(n+1) |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 2 |
| 1 |
| 2 |
| k-2 |
| 2 |
| 4-k |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3-2 |
| 2 |
| 4-3 |
| 2 |
| 4-2 |
| 2 |
| 4-4 |
| 2 |
| 3 |
| 2 |
| 1 |
| 2 |
| 5-2 |
| 2 |
| 4-5 |
| 2 |
| 6-2 |
| 2 |
| 4-6 |
| 2 |
| k-2 |
| 2 |
| 4-k |
| 2 |
| 24-2 |
| 2 |
| 4-24 |
| 2 |
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