0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, etc. is the Fibonacci sequence. Interestingly enough, ratios between consecutive terms of this sequence seem to be approaching the same number: 34/21 is ~1.619, 55/34 is ~1.618, 89/55 is ~1.618. Mathematicians have discovered the equation describing this relationship: a/b = (a + b)/a = 1.618…
