Number of sets of nonempty subsets of {1..n} with the same number of edges as covered vertices.
A367916
Number of sets of nonempty subsets of {1..n} with the same number of edges as covered vertices.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =45a(4) =1376a(5) =161587a(6) =64552473a(7) =85987037645
External references
- oeis: A367916