An Analytic Evaluation of Euler Sharp Sums

We give a direct analytic evaluation of the Euler sharp sums ζ⁽2,\1\ᵈ⁻³,2̄) for all even integers d≥4, expressing them in terms of ordinary multiple zeta values of depth at most two. The proof reduces these sharp sums to a harmonic-number series and evaluates it using a generating-function identity, thereby proving the even-depth case of a conjecture of Xu and Zhao.