Number of rooted trees with n nodes and 9 leaves.

Terms

a(0) =1a(1) =9a(2) =65a(3) =378a(4) =1867a(5) =8056a(6) =31061a(7) =108692a(8) =349703a(9) =1044990a(10) =2924863a(11) =7722047a(12) =19346165a(13) =46229029a(14) =105831924a(15) =233008811a(16) =495046641a(17) =1017948120a(18) =2031186319a(19) =3942115307a(20) =7457028087a(21) =13774178034a(22) =24885909121a(23) =44043512380