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

A318902

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

Terms

    a(0) =1a(1) =1a(2) =3a(3) =8a(4) =22a(5) =60a(6) =166a(7) =461a(8) =1291a(9) =3629a(10) =10246a(11) =29020a(12) =82448a(13) =234818a(14) =670288a(15) =1917054a(16) =5492422a(17) =15760308a(18) =45286760a(19) =130293687a(20) =375293797a(21) =1082109082a(22) =3123088057a(23) =9021467714a(24) =26080762653a(25) =75454838291a(26) =218451043430a(27) =632849337956

External references