三角形起点:
01: 1,
02: 2, 0,
03: 3, 1, 0,
04: 6, 2, 0, 0,
05: 10, 5, 1, 0, 0,
06: 20, 9, 3, 0, 0, 0,
07: 37, 19, 7, 1, 0, 0, 0,
08: 72, 36, 16, 4, 0, 0, 0, 0,
09: 140, 71, 33, 11, 1, 0, 0, 0, 0,
10: 275, 139, 67, 26, 5, 0, 0, 0, 0, 0,
11: 540, 274, 135, 58, 16, 1, 0, 0, 0, 0, 0,
12: 1069, 539, 269, 123, 42, 6, 0, 0, 0, 0, 0, 0,
13: 2118, 1068, 534, 254, 99, 22, 1, 0, 0, 0, 0, 0, 0,
14: 4206, 2117, 1062, 516, 220, 64, 7, 0, 0, 0, 0, 0, 0, 0,
15: 8365, 4205, 2111, 1040, 470, 163, 29, 1, 0, 0, 0, 0, 0, 0, 0,
...