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Enrique Zeleny
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Demonstrations 461  480 of 524
Adding Polygonal Numbers
Chains of Amicable Numbers
Cycles in Sums of Prime Factors
Covering the Plane with Polygons
Preferred Values of Collatz Paths
Why a Number Is Prime
Distribution of Palindromes in Base b
Gauss Map
Time and Weight in the Solar System's Planets
Pythagoras Tree
Tangram
Rotating a Hypercube
Your Favorite Necktie
Mercury's Perihelion Precession
Multiplying with Lines
Plots of Compositions of Bitwise Operations
Group of Symmetries of the Square
Einstein Solid
Rotating Substitution Systems
The BasePhi Number System
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