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Jul 24, 2014 at 12:28 vote accept Chris L
Jul 23, 2014 at 13:40 answer added Ira Gessel timeline score: 3
Jul 22, 2014 at 19:09 answer added Robert Israel timeline score: 1
Jul 22, 2014 at 17:32 comment added The Masked Avenger This bears some resemblance to Catalan numbers. Maybe you can find and tweak a similar relation among Catalan numbers to get a proof.
Jul 22, 2014 at 16:24 comment added Robert Israel You don't want that $(-1)^n$: it should be just $-1/(4n^2-1)$.
Jul 22, 2014 at 16:07 review First posts
Jul 22, 2014 at 16:14
Jul 22, 2014 at 16:03 history asked Chris L CC BY-SA 3.0