Number of maximal antichains of nonempty, non-singleton subsets of {1..n}.
A326360
Number of maximal antichains of nonempty, non-singleton subsets of {1..n}.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =13a(5) =279a(6) =29820a(7) =123590767
External references
- oeis: A326360