Concepts2
∑MathAdvanced
Generating Functions - OGF
An ordinary generating function (OGF) encodes a sequence (a_n) as a formal power series A(x) = \sum_{n \ge 0} a_n x^n.
#ordinary generating function#ogf#coefficient extraction+12
∑MathIntermediate
Stars and Bars
Stars and Bars counts the ways to distribute n identical items into k distinct bins using combinations.
#stars and bars#combinatorics#binomial coefficient+12