The Wiener index of the binary Fibonacci tree of order n.

Terms

a(0) =1a(1) =10a(2) =50a(3) =214a(4) =802a(5) =2802a(6) =9275a(7) =29580a(8) =91668a(9) =277924a(10) =828092a(11) =2433140a(12) =7067885a(13) =20337318a(14) =58054534a(15) =164602410a(16) =463990190a(17) =1301338150a(18) =3633753815a(19) =10107239160a(20) =28016346216a(21) =77419909800a(22) =213349801560a(23) =586471432104