Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type E_n joins.
A293952
Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type E_n joins.
Terms
- a(0) =1a(1) =3a(2) =99a(3) =11259a(4) =3052323a(5) =1620265923
External references
- oeis: A293952