IMathAS-libretexts

F_n denotes the n^th Fibonacci number. (F_n = F_n-2 + F_n-1).

Given: F₁₁ = 89 and F₁₂ = 144
find the next Fibonacci number F₁₃

F₁₃ =

[more..]

Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity