Number of rooted trees with n nodes, at least half of which are leaves.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =13a(6) =20a(7) =67a(8) =110a(9) =383a(10) =663a(11) =2346a(12) =4217a(13) =15118a(14) =27979a(15) =101092a(16) =191440a(17) =695474a(18) =1341974a(19) =4893067a(20) =9589567a(21) =35055011a(22) =69612556a(23) =254923825a(24) =511987473a(25) =1877232869a(26) =3807503552a(27) =13972144807a(28) =28585315026a(29) =104955228432