Number of sets of nonempty subsets of {1..n} with only one possible way to choose a sequence of different vertices of each edge.
A367904
Number of sets of nonempty subsets of {1..n} with only one possible way to choose a sequence of different vertices of each edge.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =38a(4) =666a(5) =32282a(6) =3965886a(7) =1165884638a(8) =792920124786
External references
- oeis: A367904