三角形T(n,k)开始于:
1;
1, 1;
2, 2, 2;
3, 6, 6, 3;
5, 12, 24, 12, 5;
8, 25, 60, 60, 25, 8;
13, 48, 150, 180, 150, 48, 13;
21, 91, 336, 525, 525, 336, 91, 21;
34, 168, 728, 1344, 1750, 1344, 728, 168, 34;
55, 306, 1512, 3276, 5040, 5040, 3276, 1512, 306, 55;
89, 550, 3060, 7560, 13650, 16128, 13650, 7560, 3060, 550, 89;
...