Volume 40 
Number 1 
February 2002 
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WenJin Woan
A Combinatorial Proof of a Recursive Relation of the Motzkin Sequence by Lattice Paths
 3 
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László Szalay
On the Resolution of the Equation U_{n} = \binom(x, 3) and V_{n} = \binom(x, 3)
 9 
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László Tóth
The Probability that k Positive Integers Are Pairwise Relatively Prime
 13 
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Chu Wenchang
Some Binomial Convolution Formulas
 19 
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Paul Thomas Young
On Modified Dickson Polynomials
 33 
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Wayne L. McDaniel
On Fibonacci and Pell Numbers of the Form kx^{2}
 41 
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Paul J. Andaloro
The 3x+1 Problem and Directed Graphs
 43 
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Napoleon Gauthier
Book Review: Fibonacci and Lucas Numbers with Applications, by Thomas Koshy
 55 
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Neville Robbins
An Alternate Proof of a Theorem of J. Ewell
 56 
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Neville Robbins
On the Number of Partitions into an Even and Odd Number of Parts
 57 
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Jack Y. Lee
On the MorganVoyce Polynomial Generalization of the First Kind
 59 
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JanChristoph Puchta
Representation of Numbers with Negative Digits and Multiplication of Small Integers
 66 
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JanChristoph Puchta
On the Distribution of Totients
 68 
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R. S. Melham
Reduction Formulas for the Summation of Reciprocals in Certain SecondOrder Recurring Sequences
 71 
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Florian Luca
Consecutive Binomial Coefficients in Pythagorean Triples and Squares in the Fibonacci Sequences
 76 
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R. B. Taher, M. Mouline, and M. Rachidi
Solving Some General Nonhomogeneous Recurrence Relations of Order r by a Linearization Method and an Application to Polynomial and Factorial Polynomial Cases
 79 
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Edited by Russ Euler & Jawad Sadek
Elementary Problems and Solutions
 85 
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Announcement of the Tenth International Conference on Fibonacci Numbers and Their Applications
 90 
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Edited by Raymond E. Whitney
Advanced Problems and Solutions
 91 
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