English: Geometric mean of the first n coefficients of the continued fraction expansions of several numbers (n is on the x-axis). Namely: green is ${\displaystyle \sin 1}$, red is the base of the natural logarithm ${\displaystyle e}$, blue is ${\displaystyle {\sqrt {31}}}$, and yellow is a number which has first 60 coefficients of the continued fraction expansion equal to 4, and after that every coefficient is either 2 or 3 depending on whether the geometric mean of all previous coefficients exceeds ${\displaystyle K_{0}}$. ${\displaystyle K_{0}}$ means Khinchin's constant.