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Oct 29, 2011 at 13:00 comment added Joseph O'Rourke I like your $s_1 = s_{2n + 1}$ example, Zack---very clever!
Oct 29, 2011 at 2:13 history edited Zack Wolske CC BY-SA 3.0
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Oct 29, 2011 at 2:02 history answered Zack Wolske CC BY-SA 3.0