1 1 1
2 3 2
3 6 6
4 10 24
5 15 120
6 21 720
7 28 5040
8 36 40320
9 45 362880
10 55 3628800
11 66 39916800
12 78 479001600
13 91 6227020800
14 105 87178291200
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28 406 3.0488834461171E+29
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31 496 8.2228386541779E+33
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48 1176 1.2413915592536E+61
49 1225 6.0828186403427E+62
50 1275 3.0414093201713E+64