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 A096532 #3 Mar 30 2012 18:50:44 %S A096532 1,2,2,3,4,4,5,6,6,6,6,7,8,8,9,10,11,11,11,11,12,13,14,14,15,16,16,16, %T A096532 16,17,18,18,19,19,20,20,20,21,21,22,23,23,24,25,25,26,26,26,27,27,27, %U A096532 28,29,29,30,30,30,31,32,32,33,34,35,35,35,36,36,37,38,39,39,39,40,40 %N A096532 Number of composite numbers not greater than the n-th composite number that do not divide any number not greater than the n-th composite number. %C A096532 a(n) = n - A096533(n). %Y A096532 Cf. A002808. %K A096532 nonn %O A096532 1,2 %A A096532 _Reinhard Zumkeller_, Jun 23 2004