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例子
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数组的左上角:
1, 2, 6, 30, 210, 2310, 30030
3, 8, 36, 240, 2520, 32340, 540540
11, 44, 276, 2760, 34860, 572880, 10750740
55, 320, 3036, 37620, 607740, 11323620, 253753500
375, 3356, 40656, 645360, 11931360, 265077120, 7422334920
3731, 44012, 686016, 12576720, 277008480, 7687412040, 235239464460
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