The square in a square is a great building block to use in other quilt blocks. For an example of this, see the Indiana Puzzle block . The center square of that block is a square in a square.

You can find 36 squares with length 1, 25 squares with length 2, 16 squares with length 3, nine squares with length 4, four squares with length 5 and one square with length 6. In total, there are ...