Volume 21 
Number 1 
February 1983 
Full text
Neville Robbins
On Fibonacci and Lucas Numbers Which are Sums of Precisely Four Squares
 3 
Full text
A. G. Shannon
Intersections of SecondOrder Linear Recursive Sequences
 6 
Full text
Christopher D. Godsil and Reinhard Razen
A Property of Fibonacci and Tribonacci Numbers
 13 
Full text
Charles R. Wall
Unitary Harmonic Numbers
 18 
Full text 
Letter to the Editor and Response
P. G. Garcia and Steve Ligh
A Generalization of Euler's ΦFunction
 26 
Full text
C. Georghiou and A. N. Philippou
Harmonic Sums and the Zeta Function
 29 
Full text
Karel L. de Bouvère and Regina E. Lathrop
Injectivity of Extended Generalized Fibonacci Sequences
 37 
Full text
Clark Kimberling
OneFree Zeckendorf Sums
 53 
Full text
Shmuel Zaks
Generalized Profile Numbers
 58 
Full text
D. H. Lehmer and Emma Lehmer
Properties of Polynomials having Fibonacci Numbers for Coefficients
 62 
Full text 
Letter to the Editor
Ömer Egecioglu
The Parity of the Catalan Number via Lattice Paths
 65 
Full text
Edited by A. P. Hillman
Elementary Problems and Solutions
 67 
Full text
Edited by Raymond E. Whitney
Advanced Problems and Solutions
 74 
Full text
