“…the Xth figurate number with parameters k and m. For some problems and theorems related to these families of combinatorial numbers, we refer to the books [11] and [10]. The power and equal values of special cases of f k,m (X), including, for instance, binomial coefficients (for m = 3), polygonal numbers (for k = 2) and pyramidal numbers (for k = 3) have been studied intensively, see [1], [20], [4], [23], [8], [9], [14], [18], [19], [17], [16] and references therein. Brindza, Pintér and Turjányi [5] conjectured that apart from the case (m, n) = (5, 4) the equation f 3,m (x) = f 2,n (y) has only finitely many solutions in integers x, y which can be effectively determined.…”