Abstract. In this paper, we produce shuffle relations from multiple zeta values of the form ζ ({1} m−1 , n + 1). Here {1} k is k repetitions of 1, and for a string of positive integers α 1 , α 2 , . . . , α r with α r ≥ 2As applications of the sum formula and a newly developed weighted sum formula, we shall prove for even integers k, r ≥ 0 thatMathematical subject classification: Primary: 40A25, 40B05; Secondary: 11M99, 33E99.