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 A116123 #9 Nov 05 2018 11:54:25 %S A116123 82,8242,9802,538277,998002,77837026,99980002,7922547265,8643251345, %T A116123 9223797610,9999800002,106710893290,453378226757,491023832065, %U A116123 945958034530,999998000002,11916002265170,15790977390245 %N A116123 Duplicate of A054214. %K A116123 dead %O A116123 1,1