Number of inequivalent leaf-colorings of planted achiral trees with n nodes.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =13a(5) =20a(6) =43a(7) =58a(8) =115a(9) =171a(10) =323a(11) =379a(12) =1034a(13) =1135a(14) =2321a(15) =4327a(16) =8915a(17) =9212a(18) =33939a(19) =34429a(20) =128414a(21) =234017a(22) =417721a(23) =418976a(24) =2931624a(25) =5096391a(26) =11770830a(27) =20357876a(28) =64853630a(29) =64858195