Credit to Kevin MacLeod for the music Credit to Numberblocks for the inspiration of super rectangles. Don't believe me? 16 is actually a super rectangle. First of all, it can make 5 arrays. (1x16, 2x8, 4x4 (squares are rectangles), 8x2, and 16x1) That's 3 distinct rectangles. 12 and 18 are super rectangles, and they can make 3 distinct rectangles, too. So that's why 16 is a super rectangle. :) Kevin Macleod music is licensed under Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/