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 A116562 #19 Jan 03 2019 10:08:08 %S A116562 0,1,2,6,12,25,48,91,168,306,550,979,1728,3029,5278,9150,15792,27149, %T A116562 46512,79439,135300,229866,389642,659111,1112832 %N A116562 Duplicate of A045925. %K A116562 dead %O A116562 0,3 %A A116562 _Roger L. Bagula_, Mar 17 2006