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 A140752 #5 Mar 30 2012 17:29:55 %S A140752 1,2,3,4,6,8,9,10,16,20,24,30,48,60,64,72,80,84,100,108,126,192,162, %T A140752 224,189,384,448,512,576,672,11520 %N A140752 Indices of elements of A005179 that belong to A134865 (in order of their appearance in A134865). The sorted version of this sequence is given by A138394. %F A140752 a(n) = A000005(A134865(n)) %Y A140752 Cf. A000005, A005179, A134865, A138394, A140753. %K A140752 more,nonn %O A140752 1,2 %A A140752 _Max Alekseyev_, May 26 2008 %E A140752 a(31)=11520 from _Ray Chandler_, Jun 30 2008