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例子
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1;
1,1;
1、6、1;
1, 9, 9, 1;
1, 12, 54, 12, 1;
1, 15, 90, 90, 15, 1;
1, 18, 135, 540, 135, 18, 1;
1, 21, 189, 945, 945, 189, 21, 1;
1, 24, 252, 1512, 5670, 1512, 252, 24, 1;
1, 27, 324, 2268, 10206, 10206, 2268, 324, 27, 1;
1, 30, 405, 3240, 17010, 61236, 17010, 3240, 405, 30, 1;
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