三角形开始:
1;
1, 1;
1, 8, 1;
1, 12, 12, 1;
1, 16, 96, 16, 1;
1, 20, 160, 160, 20, 1;
1, 24, 240, 1280, 240, 24, 1;
1, 28, 336, 2240, 2240, 336, 28, 1;
1, 32, 448, 3584, 17920, 3584, 448, 32, 1;
1, 36, 576, 5376, 32256, 32256, 5376, 576, 36, 1;
1, 40, 720, 7680, 53760, 258048, 53760, 7680, 720, 40, 1;