Number of transitive reflexive binary relations R on n labeled elements where max_{x}(|{y : xRy}|)=3.

A135458

Number of transitive reflexive binary relations R on n labeled elements where max_{x}(|{y : xRy}|)=3.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =16a(4) =148a(5) =1805a(6) =23700a(7) =351239a(8) =5919312a(9) =112984855a(10) =2429692570a(11) =58481205365

External references