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 A088726 #7 Mar 30 2012 18:50:38 %S A088726 1,6,12,72,60,180,360,420,840,1260,3780,2520,5040,13860,36960,41580, %T A088726 27720,55440,83160,166320,277200,491400,471240,360360,1113840,720720, %U A088726 1081080,3341520,2162160,2827440,5405400,4324320,12972960,6126120 %N A088726 Smallest numbers having exactly n divisors d>1 such that also d+1 is a divisor. %C A088726 A088722(a(n))=n, A088722(k)<>n, for n<a(n). %H A088726 Ray Chandler, <a href="/A088726/b088726.txt">Table of n, a(n) for n=0..57</a> %F A088726 a(n) = 2*A130317(n+1) for n>0. - Chandler %Y A088726 Cf. A088722, A088723, A088724, A088725. %K A088726 nonn %O A088726 0,2 %A A088726 _Reinhard Zumkeller_, Oct 12 2003 %E A088726 Extended by _Ray Chandler_, May 29 2008