Set partitions

In this website are resources on counting set partitions and related structures.

It is not a complete reference. These are just some of the things I learned about when studying this topic. I made this website because it would've been of great help to me.

There might be mistakes, double check with the given sources when in doubt.

If there is something you feel should be added, removed or changed, contact me at jpbotelho.costa (at)

Number of partitions

Number of partitions into kk blocks

Parity Restrictions

Peter Luschny: set partitions




Created on 10/05/2024

Last updated on 14/05/2024