A Combinatorial Interpretation of the Chebyshev Polynomials.

Emanuele Munarini A Combinatorial Interpretation of the Chebyshev Polynomials. 649-655 2006 20 SIAM J. Discrete Math. 3 http://dx.doi.org/10.1137/S0895480103432283 db/journals/siamdm/siamdm20.html#Munarini06