I mention quite a few Integer Sequences in my latest Math Games column, this time on Square Packings. I am unsure about the best known solutions for quilts above size 100, mainly due to a lack of hand analysis on the building-up process mentioned within the column. http://www.maa.org/editorial/mathgames/mathgames_12_01_03.html --Ed Pegg Jr, www.mathpuzzle.com