New posts in generating-functions

A sequence of coefficients of $x+(x+(x+(x+(x+(x+\dots)^6)^5)^4)^3)^2$

Why are Stirling numbers of the first kind related to the number of permutations with $k$ cycles?

Counting integer partitions of n into exactly k distinct parts size at most M

Unexpected Proofs Using Generating Functions

Why do engineers use the Z-transform and mathematicians use generating functions?

Generating function solution to previous question $a_{n}=a_{\lfloor n/2\rfloor}+a_{\lfloor n/3 \rfloor}+a_{\lfloor n/6\rfloor}$

Proving a binomial sum identity $\sum _{k=0}^n \binom nk \frac{(-1)^k}{2k+1} = \frac{(2n)!!}{(2n+1)!!}$

How are we able to calculate specific numbers in the Fibonacci Sequence?

Combinatorial Argument for Exponential and Logarithmic Function Being Inverse

A nice but somewhat challenging binomial identity

Expected maximum number of unpaired socks

How to show that $1 \over \sqrt{1 - 4x} $ generates $\sum_{n=0}^\infty \binom{2n}{n}x^n $

Why are generating functions useful?

Find a generating function for the number of strings

How many connected graphs over V vertices and E edges?

Generating functions and central binomial coefficient

Factorial and exponential dual identities

Making Change for a Dollar (and other number partitioning problems)

The generating function for the Fibonacci numbers

How can I learn about generating functions?