Seine, oil on wood by Ellsworth Kelly 1951, with a study. The physicist Brian Gin-ge Chen discusses the painting in terms of diffusion, predictable randomness, geography, lottery, percolation, etc:
Rectangles were placed according to numbers drawn out of a hat!
Each of the first 41 columns contains one more black
rectangle than the one to its left.
Each of the next 40 following columns contains one more
white rectangle than the one to its left.