Number of series-reduced balanced rooted trees whose leaves form a set partition of {1,...,n}.

A320154

Number of series-reduced balanced rooted trees whose leaves form a set partition of {1,...,n}.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =18a(4) =92a(5) =588a(6) =4328a(7) =35920a(8) =338437a(9) =3654751a(10) =45105744a(11) =625582147a(12) =9539374171a(13) =157031052142

External references