Number of inversions in all Fibonacci binary words of length n.

Terms

a(0) =0a(1) =0a(2) =1a(3) =4a(4) =12a(5) =31a(6) =73a(7) =162a(8) =344a(9) =707a(10) =1416a(11) =2778a(12) =5358a(13) =10188a(14) =19139a(15) =35582a(16) =65556a(17) =119825a(18) =217487a(19) =392286a(20) =703618a(21) =1255669a(22) =2230608a(23) =3946020a(24) =6954060a(25) =12212280a(26) =21377365a(27) =37309288a(28) =64935132a(29) =112726771