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例子
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方形数组开始:
1, 1, 1, 1, 1, 1, 1, 1, ...
0, -2, -3, -4, -5, -6, -7, -8, ...
0, 4, 6, 10, 15, 21, 28, 36, ...
0, -8, -9, -20, -35, -56, -84, -120, ...
0, 16, 9, 36, 70, 126, 210, 330, ...
0, -32, 0, -64, -125, -252, -462, -792, ...
0, 64, -27, 120, 200, 463, 924, 1716, ...
0, -128, 81, -240, -275, -804, -1715, -3432, ...
0, 256, -162, 496, 275, 1365, 2989, 6436, ...
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