olymmath

BALKAN-SL 2015 N5

    For a positive integer ss , denote with v2(s)v_2(s) the maximum power of 22 that divides ss . Prove that for any positive integer mm that: v2(∏n=12m(2nn))=m2m−1+1.v_2\left(\prod_{n=1}^{2^m}\binom{2n}{n}\right)=m2^{m-1}+1. (FYROM)

    Dataset text AI-MO AoPS. Quoted with source.

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