Number of rooted unlabeled trees on n nodes where each node has at most 10 children.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =20a(7) =48a(8) =115a(9) =286a(10) =719a(11) =1842a(12) =4765a(13) =12483a(14) =32964a(15) =87785a(16) =235305a(17) =634628a(18) =1720524a(19) =4686842a(20) =12820920a(21) =35206475a(22) =97010705a(23) =268154003a(24) =743351390a(25) =2066090876a(26) =5756490561a(27) =16074597300a(28) =44980514021a(29) =126109353817