365435291981domain: NAppears in sequencesa(n) = (Fibonacci(2n+1) + Fibonacci(2n+2)*phi)/kappa(phi/Fibonacci(4n+2)) where kappa(x) is the sum of successive remainders by computing the Euclidean algorithm for (1,x).at n=9A088914a(n) = Fibonacci(3*n) - (2 + (-1)^n)*Fibonacci(n).at n=18A273623