  We show that an iterative method for computing the center of mass (CM) of q
units of mass, placed on a unit interval [0, 1] along the x- axis, give rise to
a simple procedure for expanding rational numbers less than unity in powers of
r/s < 1, with r, s, integers larger than 0. The method is then extended to all
numbers, real or complex, though the procedure for none rational numbers is
more time consuming. We also show how our method provides a natural way to
generalize Jacobsthal numbers. Moreover, the method provides a way to generate
infinitely many sequences of numbers, of which many play an important rule in
mathematical sciences and engineering, to name few, Jacobsthal sequence,
Fibonacci sequence, and Pell sequence.
