a(n) = (Fibonacci(5n)/Fibonacci(n) - 5)/50.

Terms

a(0) =0a(1) =1a(2) =6a(3) =45a(4) =300a(5) =2080a(6) =14196a(7) =97461a(8) =667590a(9) =4576825a(10) =31367160a(11) =215001216a(12) =1473620616a(13) =10100397385a(14) =69229018950a(15) =474503107365