Number of transitive reflexive early confluent binary relations R on 2n labeled elements where max_{x}(|{y:xRy}|)=n.
A261238
Number of transitive reflexive early confluent binary relations R on 2n labeled elements where max_{x}(|{y:xRy}|)=n.
Terms
- a(0) =1a(1) =1a(2) =61a(3) =12075a(4) =4798983a(5) =3151808478
External references
- oeis: A261238