Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type S_n joins.
A293953
Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type S_n joins.
Terms
- a(0) =1a(1) =5a(2) =169a(3) =19241a(4) =5216485a(5) =2769073949
External references
- oeis: A293953