Number of set-systems (without {}) on n vertices that are closed under intersection and have an edge containing all of the vertices, or Moore families without {}.
A326903
Number of set-systems (without {}) on n vertices that are closed under intersection and have an edge containing all of the vertices, or Moore families without {}.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =16a(4) =209a(5) =11851a(6) =8277238a(7) =531787248525
External references
- oeis: A326903