8519 /www/nrich/html/content/id/8519/ 10 0000-00-00T00:00:00 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">Mathematicians are often interested in exploring the structure of number sequences. In these problems, we invite you to explore and describe sequences, and explain the patterns you notice.</mdoxml> 2 3 0 0 0 0 0 Header for Number Patterns in Sequences feature Sept 2012