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 A271312 #31 Mar 02 2023 15:57:45 %S A271312 1,111,311,13211,111312211,31131122211,1321132132211, %T A271312 1312211312111322211,1113112221131112311332211, %U A271312 311321322113311213212322211,132113121113222123211211131211121332211,11131221131112311332111213122112311311123112112322211 %N A271312 Erroneous duplicate of A171773. %K A271312 dead %O A271312 1,2