That is the functionality of recursive formulas. L_n L_ n 1 L_ n 2 Of course we replace the Fs with Ls to prevent confusion between the two sequences. Donate or volunteer today.
S is the set that is defined by the following clauses.
Khan Academy is a 501c3 nonprofit organization. The sequence a_n_n ge 0 with closed formula a_n 2ntext 1 1 2 3 5 8 13 ldots The Fibonacci numbers or Fibonacci sequence defined recursively by F_n F_n-1 F_n-2 with F_1 F_2 1text Example 214. 1 is in S. Recursive formulas for arithmetic sequences.