Question: Let n e N. Use lattice paths to give a combinatorial proof of the identity 2n 2n (2k 2n 2k 1 () 1 1

Let n e N. Use lattice paths to give a combinatorial proof 

Let n e N. Use lattice paths to give a combinatorial proof of the identity 2n 2n (2k 2n 2k 1 () 1 1 n+1 k+1 k k-0 n n -

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