三角形开始:
1;
1, 2;
2, 3, 5;
6, 8, 11, 16;
25, 31, 39, 50, 66;
137, 162, 193, 232, 282, 348;
944, 1081, 1243, 1436, 1668, 1950, 2298;
7884, 8828, 9909, 11152, 12588, 14256, 16206, 18504;
77514, 85398, 94226, 104135, 115287, 127875, 142131, 158337, 176841;
...