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 A287026 #46 Apr 05 2019 12:22:18 %S A287026 220,284,1184,1210,6232,6368,10744,10856,66928,66992,16137628, %T A287026 16150628,28118032,28128368,766292835,766512285,1930301618,1930741582, %U A287026 4000783984,4001351168,44303273584,44307987968,85617896265,85625175735,161899964416,161905117184 %N A287026 List of pairs of amicable numbers (m, n) with record value of m/n. %C A287026 The 2 members in each pair are adjacent to each other in the sequence. %C A287026 The pairs were found using Sergei Chernykh's Amicable pair list. There are 21 pairs with lesser member < 10^18. %H A287026 Amiram Eldar, <a href="/A287026/b287026.txt">Table of n, a(n) for n = 1..44</a> %H A287026 Sergei Chernykh, <a href="http://sech.me/ap/index.html">Amicable pairs list</a>. %H A287026 Shyam Sunder Gupta, <a href="http://www.shyamsundergupta.com/amicable.htm">Amicable Numbers</a>. %e A287026 The ratios m/n are %e A287026 220/284 = 0.7746... %e A287026 1184/1210 = 0.9785... %e A287026 6232/6368 = 0.9786... %e A287026 10744/10856 = 0.9896... %e A287026 66928/66992 = 0.9990... %e A287026 16137628/16150628 = 0.9991... %e A287026 28118032/28128368 = 0.9996... %e A287026 766292835/766512285 = 0.99971... %e A287026 1930301618/1930741582 = 0.99977... %e A287026 4000783984/4001351168 = 0.99985... %e A287026 44303273584/44307987968 = 0.99989... %e A287026 85617896265/85625175735 = 0.99991... %e A287026 161899964416/161905117184 = 0.99996... %e A287026 456280713808/456281771312 = 0.999997... %e A287026 52326552030976/52326637800704 = 0.999998... %e A287026 1132213192149585/1132213862340015 = 0.9999994... %e A287026 27117998061385216/27118008762013184 = 0.99999960... %e A287026 226615161368838645/226615243086790155 = 0.99999963... %e A287026 286707053950093312/286707152546674688 = 0.99999965... %e A287026 692760387785689984/692760539319737216 = 0.99999978... %e A287026 794879833279366144/794879862664408064 = 0.99999996... %e A287026 5462337996254147968/5462338103823900032 = 0.99999998... %Y A287026 Cf. A063990, A287011. %Y A287026 Cf. A259180 (amicable pairs). %K A287026 nonn,tabf %O A287026 1,1 %A A287026 _Amiram Eldar_, Aug 31 2017