Number of labeled clutters (connected antichains) spanning n vertices with singleton edges allowed.
A304985
Number of labeled clutters (connected antichains) spanning n vertices with singleton edges allowed.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =40a(4) =1344a(5) =203136a(6) =495598592
External references
- oeis: A304985