三角形开头为:
683;
341, 341;
171, 341, 171;
85, 256, 256, 85;
43, 171, 256, 171, 43;
21, 106, 214, 214, 106, 21;
11, 64, 160, 214, 160, 64, 11;
5, 37, 111, 187, 187, 111, 37, 5;
3, 21, 75, 149, 187, 149, 75, 21, 3;
1, 12, 48, 111, 168, 168, 111, 48, 12, 1;
1, 6, 30, 80, 140, 168, 140, 80, 30, 6, 1;