Behrisch, M. (2023, June 26). Counting transformation monoids and semigroups [Conference Presentation]. Linz Algebra Research Day (LARD 1/2023), Hagenberg, Austria.
We show how to enumerate different types of transformation monoids and semigroups on finite sets using the NextClosure algorithm by Ganter. This leads to an exension of the sequence A343140 in The On-line Encyclopedia of Integer Sequences (https://oeis.org/A343140).