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Number Theory
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Demonstrations 1  20 of 595
SemiFibonacci Partitions
New this month
Euclidean Algorithm, GCD and LCM
Doubly Recursive Integer Factorizations
Arranging Balls into Boxes
The Music of Mathematical Constants
Check Digit Schemes
Virtual Flash Cards
Basic Arithmetic in Other Bases
Illustrating the Law of Large Numbers
An Exploration of the "6174 Problem" and Some Generalizations
Generalized Fibonacci Sequence and the Golden Ratio
Plotting Digits of Irrational Numbers
Repeating Continued Fractions
Distributions of Leading Digits
Regressive Recursion
The Ulam Prime Spiral
Padovan's Spiral Numbers
Arithmetic Sculpture for Addition and Multiplication
A Geometric Proof of the Square Pyramidal Number Formula
Rauzy Fractals of Order Four
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