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 A086938 #6 May 28 2015 18:35:54 %S A086938 1,4,3,8,5,18,7,16,27,20,11,48,13,28,15,64,17,54,19,40,21,44,23,96,25, %T A086938 52,81,56,29,90,31,128,33,68,35,144,37,76,39,200,41,126,43,88,135,92, %U A086938 47,192,49,250,51,104,53,162,55,112,57,116,59,360,61,124,189,256 %N A086938 Smallest m with A086571(m) = n. %C A086938 a(n) < A086939(n); A086571(a(n)) = A086571(A086939(n)) = n; %C A086938 n and A086571 are divisors of a(n); %C A086938 a(n) = A086572(A086939(n)), A086939(n) = A086572(a(n)). %H A086938 Ivan Neretin, <a href="/A086938/b086938.txt">Table of n, a(n) for n = 1..10000</a> %K A086938 nonn %O A086938 1,2 %A A086938 _Reinhard Zumkeller_, Jul 24 2003