Number of 2n+1-node rooted trees in which the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root equals n+1.

A255705

Number of 2n+1-node rooted trees in which the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root equals n+1.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =8a(4) =22a(5) =60a(6) =167a(7) =465a(8) =1306a(9) =3681a(10) =10422a(11) =29597a(12) =84313a(13) =240757a(14) =689035a(15) =1975753a(16) =5675145a(17) =16326198a(18) =47032200a(19) =135658367a(20) =391733593a(21) =1132357784a(22) =3276330780a(23) =9487885056a(24) =27497891241a(25) =79753806451a(26) =231474005120a(27) =672250119756

External references