Sum of all numbers from and including Fibonacci(n-1) to and including Fibonacci(n).

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =12a(5) =26a(6) =63a(7) =153a(8) =385a(9) =979a(10) =2520a(11) =6524a(12) =16965a(13) =44225a(14) =115479a(15) =301833a(16) =789412a(17) =2065414a(18) =5405235a(19) =14147705a(20) =37033701a(21) =96946631a(22) =253795248a(23) =664421400a(24) =1739440297a(25) =4553853121a(26) =11922044043a(27) =31212157613a(28) =81714232380a(29) =213930221714