Comments on: Anatomy of a Project Euler problem, and, some remarks on the OEIS http://jsomers.net/blog/pe-oeis James Somers Fri, 03 Sep 2010 04:19:20 -0500 http://wordpress.org/?v=2.8.5 hourly 1 By: Jeremy http://jsomers.net/blog/pe-oeis/comment-page-1#comment-3351 Jeremy Wed, 06 Jan 2010 21:23:21 +0000 http://jsomers.net/blog/pe-oeis#comment-3351 <p>Another interpretation of the Catalan numbers whose correspondence to the problem is a bit closer (in my opinion) is that it is the number of ways of making a path along an n x n grid, going only up and to the right, where your vertical coordinate is always greater than or equal to your horizontal component (i.e., you step in the upper-left-hand side).</p> Another interpretation of the Catalan numbers whose correspondence to the problem is a bit closer (in my opinion) is that it is the number of ways of making a path along an n x n grid, going only up and to the right, where your vertical coordinate is always greater than or equal to your horizontal component (i.e., you step in the upper-left-hand side).

]]> By: Sharon Traiberman http://jsomers.net/blog/pe-oeis/comment-page-1#comment-15 Sharon Traiberman Fri, 13 Mar 2009 21:44:02 +0000 http://jsomers.net/blog/pe-oeis#comment-15 <p>Sick solution man. Sick solution.</p> <p>The chords thing is very nice.</p> Sick solution man. Sick solution.

The chords thing is very nice.

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