OK, now you've set aside that problem, here's another: http://en.wikipedia.org/w...

		fernly on Jan 9, 2014 \| parent \| context \| favorite \| on: Lessons from working 6 months on a math problem an... OK, now you've set aside that problem, here's another: http://en.wikipedia.org/wiki/Golomb_ruler Quite similar in its maddening simplicity.