Sum_{d|F(n)} d^3, where F(n) are the Fibonacci numbers.

Terms

a(0) =1a(1) =1a(2) =9a(3) =28a(4) =126a(5) =585a(6) =2198a(7) =9632a(8) =44226a(9) =167832a(10) =704970a(11) =3543517a(12) =12649338a(13) =53609220a(14) =257397588a(15) =1000032768a(16) =4073003174a(17) =19720373400a(18) =73088555292a(19) =323884878912