Number of isomorphism classes of non-associative commutative closed binary operations on a set of order n.
A079196
Number of isomorphism classes of non-associative commutative closed binary operations on a set of order n.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =117a(4) =43910a(5) =254429575
External references
- oeis: A079196