Number of (unlabeled) rooted trees with n leaf nodes and without unary nodes or outdegrees larger than ten.

A292216

Number of (unlabeled) rooted trees with n leaf nodes and without unary nodes or outdegrees larger than ten.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =12a(6) =33a(7) =90a(8) =261a(9) =766a(10) =2312a(11) =7067a(12) =21962a(13) =68944a(14) =218718a(15) =699423a(16) =2253303a(17) =7304522a(18) =23812437a(19) =78008885a(20) =256688310a(21) =847979474a(22) =2811399583a(23) =9351303948a(24) =31196953900a(25) =104359901859a(26) =349979094150

External references