  The connection between the generating functions of various sets of tableaux
and the appropriate families of quasisymmetric functions is a significant tool
to give a direct analytical proof of some advanced bijective results and
provide new combinatorial formulas. In this paper we focus on two kinds of type
B Littlewood-Richardson coefficients and derive new formulas using weak
composition quasisymmetric functions and Chow's quasisymmetric functions. In
the type A case these coefficients give the multiplication table for Schur
functions, i.e. the generating functions for classical Young tableaux. We look
at their generalisations involving a set of bi-tableaux and domino tableaux.
