olymmath

ISL 1982 Problem 49

    Simplify ∑k=0n(2n)!(k!)2((n−k)!)2.\sum_{k=0}^n \frac{(2n)!}{(k!)^2((n-k)!)^2}.

    Dataset text AI-MO AoPS. Quoted with source.

    Solutions

    No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.

    Add a solution

    Similar problems

    These problems have the most words in common with this statement.

    Locator isl/1982/p49 · Tag GWZTKK2Z7Z · Edit this page on GitHub · Keys: j next, k previous