Number of non-associative commutative closed binary operations on a set of order n.
A079195
Number of non-associative commutative closed binary operations on a set of order n.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =666a(4) =1047436a(5) =30517547395
External references
- oeis: A079195