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 A081379 #12 Sep 09 2017 22:23:15 %S A081379 1,3,14,35,42,70,105,119,209,210,238,248,297,357,418,477,594,595,616, %T A081379 627,714,744,954,1045,1178,1190,1240,1254,1463,1485,1672,1674,1736, %U A081379 1785,1848,1863,2079,2090,2376,2385,2540,2728,2926,2945,2970 %N A081379 Duplicate of A081377. %K A081379 dead %O A081379 1,2