Number of partial order relations on [n] such that 1 and 2 are in the same connected component.
A352761
Number of partial order relations on [n] such that 1 and 2 are in the same connected component.
Terms
- a(0) =2a(1) =14a(2) =176a(3) =3644a(4) =117860a(5) =5755964a(6) =414823916a(7) =43390462724
External references
- oeis: A352761