Walking through a quilt shop I saw a Fibonacci pattern for sale. What a great idea - using the Fibonacci sequence to decide the fabric widths. Knowing that the sequence is 1 1 2 3 5 8 13 (and so on, adding the last two numbers to get the next), I didn't need to buy the pattern. I used the Fibonacci sequence literally, cutting the fabric into 1, 2, 3, 5 and 8-inch strips. Because of the 1/4 inch seam allowance on each side of a strip, the finished size of each strip ends up a 1/2 inch narrower. The narrowest white or black stripe you see is a 1/2 inch wide. The sequence is used in both directions -- horizontally and vertically, and alternates between black and white. I cut long strips of each color in the Fibonacci sequence widths, and pieced them together in order, alternating colors. I then cut the pieced strips using the sequence, and combined those strips so the colors alternate correctly. The back of the quilt uses a purple fabric that happens to have a Fibonacci pattern on it too. You can see the quilting lines on the back. I just stitched in the ditch. The Fibonacci quilt gives a three-dimensional illusion when seen from a distance, which makes it extra hunky-dory and geeky. This quilt is a wedding gift for a wonderfully geeky friend who'll be getting it soon!
