n-th term of the Fibonacci-type sequence x(1)=1, x(2)=Fibonacci(n), x(k+1)=x(k)+x(k-1) for k>1.

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =17a(5) =43a(6) =109a(7) =281a(8) =727a(9) =1891a(10) =4929a(11) =12871a(12) =33641a(13) =87985a(14) =230203a(15) =602447a(16) =1576849a(17) =4127635a(18) =10805301a(19) =28287049a(20) =74053871a(21) =193871371a(22) =507555073a(23) =1328785487a(24) =3478787857a(25) =9107556193a(26) =23843845299a(27) =62423922391a(28) =163427829137a(29) =427859414971