[en] Number of quasitrivial semigroups on an arbitrary n-element set. [en] Number of associative and quasitrivial binary operations on {1,...,n}. Convention a(0)=1.
Disciplines :
Mathematics Computer science
Author, co-author :
MARICHAL, Jean-Luc ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Mathematics Research Unit
