表格开始:
1 1 1 1 1 1 1 1 1 1 ...
2 3 4 6 6 13 10 24 22 45 ...
3 6 10 21 24 92 78 327 443 1632 ...
4 10 20 55 76 430 460 2605 5164 26962 ...
5 15 35 120 201 1505 2015 14070 37085 246753 ...
6 21 56 231 462 4291 6966 57561 188866 1519035 ...
7 28 84 406 952 10528 20140 192094 752087 7079800 ...
...
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