Total number of fixed points in planted trees with n nodes.

Terms

a(0) =0a(1) =1a(2) =0a(3) =1a(4) =1a(5) =4a(6) =6a(7) =14a(8) =28a(9) =60a(10) =125a(11) =263a(12) =558a(13) =1181a(14) =2513a(15) =5339a(16) =11392a(17) =24290a(18) =51926a(19) =111017a(20) =237757a(21) =509404a(22) =1092713a(23) =2345256a(24) =5038015a(25) =10828720a(26) =23291759a(27) =50126055a(28) =107939753a(29) =232550011