xn mjcnb6goepcbd1bdikjgm2asbdk6b1o6a

Rule: xn = xn-1 + xn-2. Now what does xn-1 mean? It means "the previous term" because the term number (n) is 1 less (n-1). And xn-2 means the term before that one. Lets try that Rule for the 6th term