Number of closure operators on a set of n elements which satisfy the T_1 separation axiom.
A334254
Number of closure operators on a set of n elements which satisfy the T_1 separation axiom.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =8a(4) =545a(5) =702525a(6) =66960965307
External references
- oeis: A334254