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

A318859

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

Terms

    a(0) =0a(1) =1a(2) =1a(3) =4a(4) =9a(5) =22a(6) =54a(7) =138a(8) =346a(9) =889a(10) =2285a(11) =5928a(12) =15436a(13) =40424a(14) =106230a(15) =280305a(16) =741912a(17) =1969816a(18) =5243942a(19) =13995807a(20) =37439883a(21) =100371907a(22) =269623436a(23) =725638613a(24) =1956352468a(25) =5283171593a(26) =14289645110a(27) =38707131195a(28) =104995130162a(29) =285184002486

External references