Leibniz algebras of nilindex n-3 with characteristic sequence (n-3,2,1)

In this paper we present the classification of a subclass of naturally graded Leibniz algebras. This subclass has the nilindex n-3 and the characteristic sequence (n-3,2,1), where n is the dimension of the algebra. In fact, this result completes the classification of naturally graded Leibniz algebras of nilindex n-3.