Number of increasing rooted trees where each node at height h has 0 or h+1 children.

A075534

Number of increasing rooted trees where each node at height h has 0 or h+1 children.

Terms

    a(0) =1a(1) =1a(2) =0a(3) =1a(4) =0a(5) =0a(6) =5a(7) =0a(8) =0a(9) =35a(10) =189a(11) =0a(12) =0a(13) =10395a(14) =18018a(15) =77616a(16) =0a(17) =5360355a(18) =15338862a(19) =72648576a(20) =108636528a(21) =4737022290a(22) =47846771280a(23) =84845128368a(24) =833082788538

External references