Number of intersecting antichains of nonempty subsets of {1..n} with empty intersection (meaning there is no vertex in common to all the edges).
A326366
Number of intersecting antichains of nonempty subsets of {1..n} with empty intersection (meaning there is no vertex in common to all the edges).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =28a(5) =1960a(6) =1379273a(7) =229755337549
External references
- oeis: A326366