In this paper, we consider the usual Pell, Pell-Lucas and Modified
Pell sequences, and we define some new matrices, which are based on
Modified Pell and Pell-Lucas numbers, with determinants equal to 2n
or 23n.This unique properties provide very important formulas like the
Simpson F ormula of Modified Pell and Pell-Lucas numbers. Also we
show that the Modified Pell and Pell-Lucas numbers have the generating
matrices.Further, we present some elementary identities between them
by these matrices.