Number of rooted ordered trees with node weights summing to n, where the root has weight 0, non-root node weights are greater than 0, and no nodes have the same weight as their parent node.
A384748
Number of rooted ordered trees with node weights summing to n, where the root has weight 0, non-root node weights are greater than 0, and no nodes have the same weight as their parent node.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =16a(5) =44a(6) =128a(7) =376a(8) =1114a(9) =3346a(10) =10152a(11) =31028a(12) =95474a(13) =295532a(14) =919446a(15) =2873388a(16) =9015812a(17) =28390466a(18) =89689586a(19) =284173096a(20) =902780060a(21) =2875016084a(22) =9176388532a(23) =29349499212a(24) =94050228650a(25) =301918397716a(26) =970815092346
External references
- oeis: A384748