Number of rooted trees with n nodes such that six equals the maximal number of isomorphic subtrees extending from the same node.

A318863

Number of rooted trees with n nodes such that six equals the maximal number of isomorphic subtrees extending from the same node.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =3a(4) =8a(5) =22a(6) =60a(7) =168a(8) =466a(9) =1306a(10) =3677a(11) =10400a(12) =29503a(13) =83964a(14) =239523a(15) =684855a(16) =1961933a(17) =5630300a(18) =16182535a(19) =46576693a(20) =134225427a(21) =387254945a(22) =1118433179a(23) =3233228736a(24) =9354963666a(25) =27089288339a(26) =78501221909a(27) =227643444368a(28) =660560681614

External references