Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type A_n joins.
A293950
Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type A_n joins.
Terms
- a(0) =1a(1) =2a(2) =40a(3) =3194a(4) =666160a(5) =287316122a(6) =222237912664
External references
- oeis: A293950