| Sn |
| Tn |
| 2n |
| 3n+1 |
∴
| S2n−1 |
| T2n−1 |
| 2(2n−1) |
| 3(2n−1)+1 |
| 4n−2 |
| 6n−2 |
| 2n−1 |
| 3n−1 |
∴
| an |
| bn |
| (2n−1)an |
| (2n−1)bn |
| S2n−1 |
| T2n−1 |
| 2n−1 |
| 3n−1 |
故答案为：
| 2n−1 |
| 3n−1 |
| Sn |
| Tn |
| 2n |
| 3n+1 |
| an |
| bn |
| Sn |
| Tn |
| 2n |
| 3n+1 |
| S2n−1 |
| T2n−1 |
| 2(2n−1) |
| 3(2n−1)+1 |
| 4n−2 |
| 6n−2 |
| 2n−1 |
| 3n−1 |
| an |
| bn |
| (2n−1)an |
| (2n−1)bn |
| S2n−1 |
| T2n−1 |
| 2n−1 |
| 3n−1 |
| 2n−1 |
| 3n−1 |