Number of labeled histories for rooted ternary trees with 2n+1 leaves if simultaneous trifurcations are allowed.
A381486
Number of labeled histories for rooted ternary trees with 2n+1 leaves if simultaneous trifurcations are allowed.
Terms
- a(0) =1a(1) =1a(2) =10a(3) =420a(4) =43960a(5) =9347800a(6) =3513910400
External references
- oeis: A381486