The online visualization titled "3.1415926535897932384626..." [two-n.com] by design studio TWO-N represents the first 4,000,000 decimals of the number Pi within a single image.
Each unique digit of Pi corresponds to a specific color, and is rendered as a 1x1 pixel dot. The result is a long, random-looking pixel carpet image. Next to a dedicated slider that allows up/down scrolling through the resulting image, one can also search for the first occurrences of any specific decimal combination.
See also DNA Rainbow, which created similar pixel-based images by mapping the 4 base molecules of DNA to pixels in the colors red, green, blue and white.