Number of set-systems covering n vertices where every vertex is the unique common element of some subset of the edges, also called covering T_1 set-systems.

A326961

Number of set-systems covering n vertices where every vertex is the unique common element of some subset of the edges, also called covering T_1 set-systems.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =36a(4) =19020a(5) =2010231696

External references