Number of rooted trees with n nodes such that no more than six isomorphic subtrees extend from the same node.

A318853

Number of rooted trees with n nodes such that no more than six isomorphic subtrees extend from the same node.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =20a(7) =48a(8) =114a(9) =284a(10) =714a(11) =1829a(12) =4731a(13) =12391a(14) =32711a(15) =87083a(16) =233347a(17) =629132a(18) =1705026a(19) =4642964a(20) =12696279a(21) =34851400a(22) =95996673a(23) =265251812a(24) =735029389a(25) =2042187079a(26) =5687726124a(27) =15876511622a(28) =44409196932a(29) =124459720195

External references