XOXO themed code art. Available at jezzamon.com/xoxo-2
To see the version that's actually on the website, see https://github.com/Jezzamonn/xoxo-2/tree/v1.0
For the version with cubes to visually explain it, check out https://github.com/Jezzamonn/xoxo-2/tree/v1.1