a(n) = Fibonacci(phi(n)), a(0) = 0.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =1a(7) =8a(8) =3a(9) =8a(10) =3a(11) =55a(12) =3a(13) =144a(14) =8a(15) =21a(16) =21a(17) =987a(18) =8a(19) =2584a(20) =21a(21) =144a(22) =55a(23) =17711a(24) =21a(25) =6765a(26) =144a(27) =2584a(28) =144a(29) =317811