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

A318864

Number of rooted trees with n nodes such that seven 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) =167a(8) =466a(9) =1307a(10) =3681a(11) =10418a(12) =29575a(13) =84219a(14) =240407a(15) =687802a(16) =1971576a(17) =5661335a(18) =16281377a(19) =46888590a(20) =135202932a(21) =390300559a(22) =1127877757a(23) =3262398334a(24) =9444747407a(25) =27364824226a(26) =79344643855a(27) =230219356666a(28) =668412171376

External references