The Riordan Calculator was created by James Shapiro in consultation with his father, Riordan expert Louis Shapiro. It was signficantly upgraded in 2024 and is free to use. If this website helps you discover new results, I would appreciate if you mention it somewhere in your paper so that others can take advantage of the calculator. However, this is purely optional.
You are encouraged to submit your papers to the new Riordan Calculator Papers section of the website! Any papers that credit the Riordan Calculator in their official published version are eligible for inclusion. Please submit papers to