Number of unlabeled rooted trees with n vertices whose non-leaf terminal subtrees are all different.
A324936
Number of unlabeled rooted trees with n vertices whose non-leaf terminal subtrees are all different.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =17a(6) =37a(7) =83a(8) =189a(9) =436a(10) =1014a(11) =2373a(12) =5578a(13) =13156a(14) =31104a(15) =73665a(16) =174665a(17) =414427a(18) =983606a(19) =2334488
External references
- oeis: A324936