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例子
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例1:写为一个三角形,其中第i行与原子核的第(i-1)级有关。三角形开始:
1;
3, 4;
7, 9, 10;
14, 17, 19, 20;
25, 29, 32, 34, 35;
41, 46, 50, 53, 55, 56;
63, 69, 74, 78, 81, 83, 84;
92, 99, 105, 110, 114, 117, 119, 120;
129, 137, 144, 150, 155, 159, 162, 164, 165;
175, 184, 192, 199, 205, 210, 214, 217, 219, 220;
...
例2:写为一个不规则三角形,其中第j行与第j个核壳有关。注意,在这种情况下,第4行只有一个术语。三角形开始:
1;
3, 4;
7, 9, 10;
14;
17, 19, 20, 25;
29, 32, 34, 35, 41;
46, 50, 53, 55, 56, 63;
69, 74, 78, 81, 83, 84, 92;
99, 105, 110, 114, 117, 119, 120, 129;
137, 144, 150, 155, 159, 162, 164, 165, 175;
184, 192, 199, 205, 210, 214, 217, 219, 220, 231;
...
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