三角形开头为:
0;
0, 0;
1, 2, 0;
5, 10, 12, 0;
23, 46, 66, 72, 0;
119, 238, 354, 456, 480, 0;
719, 1438, 2154, 2856, 3480, 3600, 0;
5039, 10078, 15114, 20136, 25080, 29520, 30240, 0;
40319, 80638, 120954, 161256, 201480, 241200, 277200, 282240, 0;
362879, 725758, 1088634, 1451496, 1814280, 2176560, 2535120, 2862720, 2903040, 0;