Number of connected set-systems covering a subset of {1..n}.
A326964
Number of connected set-systems covering a subset of {1..n}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =112a(4) =32253a(5) =2147316942
External references
- oeis: A326964
A326964
Number of connected set-systems covering a subset of {1..n}.