Number of ordered rooted trees with n non-root nodes and all outdegrees <= seven.

A036769

Number of ordered rooted trees with n non-root nodes and all outdegrees <= seven.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =42a(6) =132a(7) =429a(8) =1429a(9) =4852a(10) =16730a(11) =58422a(12) =206192a(13) =734332a(14) =2635680a(15) =9524301a(16) =34622207a(17) =126520393a(18) =464517300a(19) =1712650520a(20) =6338433840a(21) =23538973950a(22) =87690410580a(23) =327611738790

External references