三角形开头为:
1;
1, 1;
1, 6, 1;
1, 9, 9, 1;
1, 27, 26, 27, 1;
1, 105, 118, 118, 105, 1;
1, 613, 706, 714, 706, 613, 1;
1, 4333, 4930, 5016, 5016, 4930, 4333, 1;
1, 35297, 39610, 40208, 40278, 40208, 39610, 35297, 1;
1, 322577, 357856, 362168, 362742, 362742, 362168, 357856, 322577, 1;