Number of non-isomorphic hypertrees of weight n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =5a(7) =6a(8) =13a(9) =20a(10) =41a(11) =70a(12) =144a(13) =266a(14) =545a(15) =1072a(16) =2210a(17) =4491a(18) =9388a(19) =19529a(20) =41286a(21) =87361a(22) =186657a(23) =399927a(24) =862584a(25) =1866461a(26) =4058367a(27) =8852686a(28) =19384258a(29) =42570435