* Binomial coefficients and Pascal's triangle
* Calculus of finite differences
* Fibonacci numbers and linear recurrences
* Rational and algebraic generating functions
* Continued fractions and continuants
* Catalan objects and lattice animals
* Transfer matrices
* Combinatorial reciprocity theorems
* q-enumeration and tiling
* Determinants and condensation, number walls, triangulations, and frieze patterns
* Signed enumeration and applications (the theorems of Vandermonde, Cayley-Hamilton, and Gessel-Viennot)
* Markoff numbers
* Somos sequences
Maintained by
propp@math.wisc.edu.
Last updated April 22, 2003.