a(n) is the number of connected transitive relations over n unlabeled nodes.
A296105
a(n) is the number of connected transitive relations over n unlabeled nodes.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =25a(4) =157a(5) =1325a(6) =14358a(7) =199763a(8) =3549001a(9) =80673244a(10) =2352747542a(11) =88240542454
External references
- oeis: A296105