a(n) = gcd(Lucas(n)-1, Fibonacci(n)-1).

Terms

a(0) =0a(1) =2a(2) =1a(3) =2a(4) =2a(5) =1a(6) =4a(7) =2a(8) =3a(9) =2a(10) =22a(11) =1a(12) =8a(13) =2a(14) =29a(15) =2a(16) =42a(17) =1a(18) =76a(19) =2a(20) =55a(21) =2a(22) =398a(23) =1a(24) =144a(25) =2a(26) =521a(27) =2a(28) =754a(29) =1