三角形开头为:
1;
2, 2;
3, 8, 3;
4, 18, 18, 4;
5, 32, 54, 32, 5;
6, 50, 120, 120, 50, 6;
7, 72, 225, 320, 225, 72, 7;
8, 98, 378, 700, 700, 378, 98, 8;
9, 128, 588, 1344, 1750, 1344, 588, 128, 9;
10, 162, 864, 2352, 3780, 3780, 2352, 864, 162, 10;
11, 200, 1215, 3840, 7350, 9072, 7350, 3840, 1215, 200, 11;
...
作为方形数组的因式分解
/1 \ /1 2 3 4...\ /1 2 3 4...\
|2 2 | | 2 6 12...| |2 8 12 32...|
|3 6 3 |*| 3 12...|=|3 18 54 120...|
|4 12 12 4 | | 4...| |4 32 120 320...|
|... | | | |... |
(结束)