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 A083887 #5 Dec 15 2017 17:36:21 %S A083887 1,2,4,6,10,12,18,28,30,36,60,72,108,126,150,156,180,210,240,276,312, %T A083887 396,420,540,672,756,876,936,1008,1092,1152,1200,1380,1620,2016,2280, %U A083887 2520,2592,2856,3060,4056,4176,4200,4356,4800,5076,5112,5580,6120,6336 %N A083887 Positions of records in A085020. %K A083887 nonn %O A083887 1,2 %A A083887 _Jason Earls_, Jun 18 2003