nthfibseries

def nthseries(n):
    if n < 1:
        return "Incorrect input"
    elif n == 1:
        return 0
    elif n == 2:
        return 1
    elif n > 2:
        return nthseries(n-1)+nthseries(n-2)
        
print(f"n th fib series is {nthseries(9)}")