Fibonacci pattern of dots, creating a phyllotactic portrait of Fibonacci. This was created by Robert Bosch, an artist who also is a professor of mathematics, from Oberlin College in Ohio, USA. From the artist notes:
Using a simple model of phyllotaxis (the process by which plant leaves or seeds are arranged on their stem), I positioned dots on a square canvas. By varying the radii of the dots, I made them resemble Fibonacci. Incidentally, the number of dots, 6765, is a Fibonacci number. So are the number of clockwise spirals (144) and counterclockwise spirals (233) formed by the dots.