| x2 |
| 3 |
| x1+1 |
| 4×12−1 |
| x3 |
| 15 |
| x2+1 |
| 4×22−1 |
| x4 |
| 35 |
| x3+1 |
| 4×32−1 |
| x5 |
| 63 |
| x4+1 |
| 4×42−1 |
| x6 |
| 99 |
| x5+1 |
| 4×52−1 |
…；
第n个数据是
| xn+1 |
| 4n2−1 |
| xn+1 |
| (2n+1)(2n−1) |
| xn+1 |
| (2n)2−1 |
| x2 |
| 3 |
| x3 |
| 15 |
| x4 |
| 35 |
| x5 |
| 63 |
| x6 |
| 99 |
| x2 |
| 3 |
| x1+1 |
| 4×12−1 |
| x3 |
| 15 |
| x2+1 |
| 4×22−1 |
| x4 |
| 35 |
| x3+1 |
| 4×32−1 |
| x5 |
| 63 |
| x4+1 |
| 4×42−1 |
| x6 |
| 99 |
| x5+1 |
| 4×52−1 |
| xn+1 |
| 4n2−1 |
| xn+1 |
| (2n+1)(2n−1) |
| xn+1 |
| (2n)2−1 |