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 A007914 #5 Feb 20 2005 03:00:00 %S A007914 1,4,9,2,25,36,49,1,3,100,121,18,169,196,225,4,289,12,361,50,441,484, %T A007914 529,9,5,676,1,841,900,961,2,1089,1156,1225,6,1369,1444,1521,25,1681, %U A007914 1764,1849,242,75,2116,2209,36,7 %N A007914 Erroneous version of A048798. %K A007914 dead %O A007914 1,2