In this paper, we consider a generalization of Horadam sequence {w n } which is defined by the recurrence relation w n = χ (n)w n-1 + cw n-2 , where χ (n) = a if n is even, χ (n) = b if n is odd with arbitrary initial conditions w 0 , w 1 and nonzero real numbers a, b and c. As a special case, by taking the initial conditions 0, 1 and 2, b we define the sequences {u n } and {v n }, respectively. The main purpose of this study is to derive some basic properties of the sequences {u n }, {v n } and {w n } by using a matrix approach.