https://jasper-aa64.github.io/tags/catalan/Recent content in Catalan on JasperHugoen-usSat, 25 Apr 2026 00:00:00 +0000https://jasper-aa64.github.io/posts/combinatorics-3-1-ordinary-generating-functions/Sat, 25 Apr 2026 00:00:00 +0000https://jasper-aa64.github.io/posts/combinatorics-3-1-ordinary-generating-functions/Formal power series basics, ordinary generating functions, inversion identities, generalized binomial expansions, bounded counting examples, and recurrence-to-closed-form examples such as Fibonacci and Catalan.