题目：
（2006·日照）德国数学家莱布尼兹发现了下面的单位分数三角形（单位分数是分
子为1，分母为正整数的分数）．根据前五行的规律，可以知道第六行的数依次是：
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 6 |
| 1 |
| 6 |
答案
| 1 |
| 6 |
| 1 |
| 30 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 30 |
| 1 |
| 6 |
解：第6行第一个数和最后一个数都是
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 5 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 20 |
| 1 |
| 60 |
子为1，分母为正整数的分数）．| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 30 |
| 1 |
| 60 |
| 1 |
| 60 |
| 1 |
| 30 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 5 |
| 1 |
| 30 |
| 1 |
| 30 |
| 1 |
| 20 |
| 1 |
| 60 |