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

A318819

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

Terms

    a(0) =0a(1) =1a(2) =1a(3) =3a(4) =8a(5) =23a(6) =61a(7) =167a(8) =461a(9) =1288a(10) =3593a(11) =10084a(12) =28381a(13) =80218a(14) =227156a(15) =644864a(16) =1834290a(17) =5227297a(18) =14919502a(19) =42644478a(20) =122047963a(21) =349716506a(22) =1003120145a(23) =2880163515a(24) =8276937322a(25) =23805829084a(26) =68521035251a(27) =197365718477a(28) =568859465838

External references