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 A128254 #31 Jan 31 2025 19:37:22 %S A128254 1,1,1,1,3,1,1,5,5,1,1,7,12,7,1,1,9,22,22,9,1,1,11,35,50,35,11,11,13, %T A128254 51,95,95,51,13,1,1,15,70,161,210,161,70,15,1,1,17,92,252,406,406,252, %U A128254 92,17,1 %N A128254 Erroneous version of A103450. %K A128254 dead %O A128254 1,5