Number of 4-level labeled linear rooted trees with n leaves.

A050352

Number of 4-level labeled linear rooted trees with n leaves.

Terms

    a(0) =1a(1) =1a(2) =7a(3) =73a(4) =1015a(5) =17641a(6) =367927a(7) =8952553a(8) =248956855a(9) =7788499561a(10) =270732878647

External references