An infinite scale of numbers in which each number is the sum of the last two: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34… The Fibonacci scale, or series, was found by and named after the Florentine mathematician Leonardo Fibonacci, probably in the later half of the 12thC. It is used extensively in architecture, found frequently in nature and closely related to the Golden section–or Golden ratio.
In patchwork, furniture design and room placement this sequencing of numbers works, and is never a bad place to start from, especially if you have a blank canvas.