“…(X, X) . Sums involving Fibonacci, Lucas, Pell and Pell-Lucas numbers and generalizations have been studied by several authors, for example, for trigonometric sums see Melham [6,1999] and Belbachir & Bencherif [1,2007], for reciprocal and powers sums see Melham [7,1999] and [8,2000], and for the sum of squares see Long [5,1986], Čerin [2,2005] and Čerin & Gianella [3,2006].…”