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Omni-MATH / How many functions f:1,2,…,2013→1,2,…,2013 satisfy f(j)<f(i)+j−i for all integers i,j such that 1≤i<j≤2013 ? · Discussion

Discussing How many functions f:{1,2,…,2013}→{1,2,…,2013} satisfy f(j)<f(i)+j−i for all integers i,j such that 1≤i<j≤2013 ? · Omni-MATH

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