Book:David Wells/Curious and Interesting Numbers/Second Edition

Contents

 * Introduction
 * Acknowledgements
 * A List of Mathematicians in Chronological Sequence
 * Glossary
 * Bibliography


 * The Dictionary


 * Tables
 * The First $100$ Triangular Numbers, Squares and Cubes
 * The First $20$ Pentagonal, Hexagonal, Heptagonal and Octagonal Numbers
 * The First $40$ Fibonacci Numbers
 * The Prime Numbers less than $1000$
 * The Factorials of the Numbers $1$ to $20$
 * The Decimal Reciprocals of the Primes from $7$ to $97$
 * The Factors of the Repunits from $11$ to $R_{40}$
 * The Factors, where Composite, and the Values of the Functions $\phi(n)$, $d(n)$ and $\sigma(n)$


 * Index

Continued Square Root of 1, 2, 3, 4, ...
$3$:

Pythagorean Triangle with Sides in Arithmetic Progression
$5$: