Volume 47 (2014/2015)

Volume 47, Number 1 (September 2014) 

1   From the Editor SAMPLE COLUMN
3  

SETH ZIMMERMAN. Are Most Triangles Obtuse? ABSTRACT

11   KAREN HEINZ and THOMAS E. SHOWN. Using Triangular Numbers as 'Steps' when Constructing Quadratic and Cubic Sequences ABSTRACT
19   SCOTT H. BROWN. James Joseph Sylvester (1814–1897): The Bicentenary Anniversary of his Birth ABSTRACT
25  

SIMON ZASLAVSKY and ROGER KHAZAN. The Staircase Problem and Fibonacci Numbers SAMPLE ARTICLE

27   MARTIN GRIFFITHS, CHRISTOPHER BROWN and HENRY SEATON. A Mathematical Meander from Zeckendorf to Trigonometry ABSTRACT
32   SEUNG HEON LEE. The Pappus Chain Theorem and Its Applications to Geometry ABSTRACT
40   TOM MOORE. The Infinity of Triangular Oblong Numbers ABSTRACT
41   Letters to the Editor
43   Problems and Solutions
47   Reviews

 

Volume 47, Number 2 (January 2015)  

49   From the Editor SAMPLE COLUMN
51  

SEAN MCGINTY and SEAN MCKEE. Blade Shape of a Troposkein-Type of Vertical-Axis Wind Turbine ABSTRACT

61   JAY L. SCHIFFMAN. A Brief Study of Abundant Numbers not Divisible by any of the First n Primes ABSTRACT
68   KURT FINK and JAWAD SADEK. The Divergence of {cos(n)} ABSTRACT
71  

ROBERT NICOLAIDES. Fun Rewriting Series SAMPLE ARTICLE

72   AVERY WILSON. Pascal's Triangle Modulo 3 ABSTRACT
76   THOMAS KOSHY. Abbas Rouholamini Gugheri's Congruence for an Extended Fibonacci Family ABSTRACT
80   Letters to the Editor
90   Problems and Solutions
93   Reviews

 

Volume 47, Number 3 (May 2015)  

97   From the Editor SAMPLE COLUMN
99  

JONNY GRIFFITHS. Hikorski Triples ABSTRACT

105   JORGE ALMEIDA. Lottery Perception ABSTRACT
108   GUIDO LASTERS and DAVID SHARPE. The Euler Conic via Pascal ABSTRACT; GeoGebra files: The hexagon and the nine point ellipse, Euler 9 point ellipse
111  

LAURENT SERLET. Looking For a Good Time to Bet ABSTRACT

118   MARTIN GRIFFITHS. Catalan-Related Polynomials ABSTRACT
122   THOMAS KOSHY. Fibonacci Polynomials, Lucas Polynomials, and Operators ABSTRACT
125   W. J. A. COLMAN. Some Remarks on the Pell Equation ABSTRACT
128   DES MACHALE and PETER MACHALE. New Trigonometric Identities From Old ABSTRACT
132   Letters to the Editor
138   Problems and Solutions
143   Reviews