In this paper, we first introduce new definition of Mersenne Lucas numbers sequence as, for n 2, m n = 3m n−1 − 2m n−2 with the initial conditions m 0 = 2 and m 1 = 3. Considering this sequence, we give Binet's formula, generating function and symmetric function of Mersenne Lucas numbers. By using the Binet's formula we obtain some well-known identities such as Catalan's identity, Cassini's identity and d'Ocagne's identity. After that, we give some new generating functions for products of (p, q)-numbers with Mersenne Lucas numbers at positive and negative indice.