a(n) = floor((5^n)/(3^n - 2^n)).

Terms

a(0) =5a(1) =5a(2) =6a(3) =9a(4) =14a(5) =23a(6) =37a(7) =61a(8) =101a(9) =168a(10) =278a(11) =462a(12) =769a(13) =1280a(14) =2131a(15) =3550a(16) =5913a(17) =9853a(18) =16418a(19) =27359a(20) =45594a(21) =75985a(22) =126636a(23) =211055a(24) =351751a(25) =586244a(26) =977065a(27) =1628433a(28) =2714045a(29) =4523397