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例子
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矩形数组T(n,k)(行n>=0,列k>=0)的开头如下:
0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...
0, 2, 5, 9, 14, 20, 27, 35, 44, 54, 65, ...
0, 3, 7, 12, 18, 25, 33, 42, 52, 63, 75, ...
0, 4, 9, 15, 22, 30, 39, 49, 60, 72, 85, ...
0, 5, 11, 18, 26, 35, 45, 56, 68, 81, 95, ...
0, 6, 13, 21, 30, 40, 51, 63, 76, 90, 105, ...
...
三角形S(n,k)(行n>=0,列k>=0)的开头如下:
0;
1, 0;
3, 2, 0;
6, 5, 3, 0;
10, 9, 7, 4, 0;
15, 14, 12, 9, 5, 0;
21, 20, 18, 15, 11, 6, 0;
28, 27, 25, 22, 18, 13, 7, 0;
36, 35, 33, 30, 26, 21, 15, 8, 0;
…(结束)
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