User yzyzyz - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-24T07:56:15Z http://mathoverflow.net/feeds/user/17553 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/74381/is-there-a-name-for-a-formula-to-calculate-ascending-numbers-to-a-quadratic-like Is there a name for a formula to calculate ascending numbers to a quadratic-like sequence? yzyzyz 2011-09-02T17:43:31Z 2011-09-02T18:16:36Z <p>For e.g. any range of number 0 - n</p> <blockquote> <p>0 1 2 3 4 5 6 </p> </blockquote> <p>to: </p> <blockquote> <p>0 2 4 6 4 2 0 </p> </blockquote> <p>Is there a name for this kind of formula or calculation?</p> http://mathoverflow.net/questions/74381/is-there-a-name-for-a-formula-to-calculate-ascending-numbers-to-a-quadratic-like/74383#74383 Comment by yzyzyz yzyzyz 2011-09-02T20:10:28Z 2011-09-02T20:10:28Z Thank you so much! http://mathoverflow.net/questions/74381/is-there-a-name-for-a-formula-to-calculate-ascending-numbers-to-a-quadratic-like Comment by yzyzyz yzyzyz 2011-09-02T18:04:55Z 2011-09-02T18:04:55Z Sorry Charles, I do not know the mapping too, that's what I want to find out as well.