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 A120407 #10 Mar 31 2012 10:26:05 %S A120407 1,4,18,30,35,39,44,48,59,63,79,84,96,101,113,129,131,146,162,169,173, %T A120407 182,189,201,203,213,214,226,231,243,244,248,251,261,268,280,287,300, %U A120407 307,320,327,329,341,345,352,364,368,375,391,393,407,408,424,425 %N A120407 Duplicate of A080519. %K A120407 dead %O A120407 1,2 %A A120407 _Lekraj Beedassy_, Jul 04 2006