Number of binary relations R on [n] such that the transitive closure of R contains the identity relation.
A366866
Number of binary relations R on [n] such that the transitive closure of R contains the identity relation.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =253a(4) =39463a(5) =24196201a(6) =56481554827
External references
- oeis: A366866