This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A044332 #11 Mar 30 2012 18:56:43 %S A044332 100,200,300,400,500,600,700,800,900,1000,1100,1200,1300,1400,1500, %T A044332 1600,1700,1800,1900,2000,2100,2200,2300,2400,2500,2600,2700,2800, %U A044332 2900,3000,3100,3200,3300,3400,3500,3600,3700,3800 %N A044332 Numbers n such that string 0,0 occurs in the base 10 representation of n but not of n-1. %C A044332 Every element is a multiple of 100. The smallest positive multiple of 100 not in the sequence is 10100. - _David W. Wilson_, Aug 03 2005 %H A044332 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a> %K A044332 nonn,base %O A044332 1,1 %A A044332 _Clark Kimberling_