The Fibonacci Sequence is the sum of the recent two numbers. It Starts with 0 and 1 0,1,1,2,3,5,8,13,21,34,55,89,144,233 0+1=1 1+1=2 2+3=5 etc... Many of the Fibonacci numbers are found in nature. Stops at the 1477 digit due to it being a high number Fn= FN-1 + FN-2 Golden Ratio exists when a line is divided into two parts and the longer part (a) divided by the smaller part (b) is equal to the sum of (a) + (b) divided by (a), which both equal 1.618. The Phi spiral, also known as the Golden Spiral, is a logarithmic spiral whose growth factor is the golden ratio, approximately 1.618. Resources: @Ricky-Jan Google Wikipedia Scratch code