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Apr 13, 2017 at 12:19 history edited CommunityBot
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
Oct 2, 2014 at 18:15 answer added j.c. timeline score: 6
S Oct 2, 2014 at 16:11 history suggested Joonas Ilmavirta CC BY-SA 3.0
Corrected a typo in a formula and turned special characters in formulas to LaTeX commands.
Oct 2, 2014 at 15:48 review Suggested edits
S Oct 2, 2014 at 16:11
Oct 2, 2014 at 15:24 comment added Tom De Medts It's not hard to see that $N(1,n) = {2n \choose n}$, but I guess you already knew that...
Oct 2, 2014 at 15:06 review First posts
Oct 2, 2014 at 15:12
Oct 2, 2014 at 15:05 history asked Suzanne CC BY-SA 3.0