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 A220832 #18 Feb 18 2023 10:25:27 %S A220832 1,3,5,12,31,83,233,670,1981,5966 %N A220832 Erroneous version of A007827. %C A220832 See A220833 for a description of the error. %H A220832 V. P. Johnson, <a href="https://people.math.sc.edu/czabarka/Theses/JohnsonThesis.pdf">Enumeration Results on Leaf Labeled Trees</a>, Ph. D. Dissertation, Univ. Southern Calif., 2012. %K A220832 dead %O A220832 1,2