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 A109869 #8 Aug 16 2021 22:10:40 %S A109869 1,2,14,67,116,189,482,761,18253,1 %N A109869 Day numbers in Chris Cagle's song "What a beautiful day". %H A109869 Chris Cagle, <a href="http://web.archive.org/web/1id_/http://www.tabcountry.com/song3541/Chris-Cagle-What-A-Beautiful-Day">What a beautiful day</a> [wayback copy] %H A109869 <a href="/index/So#songs">Index entries for sequences related to songs</a> %K A109869 nonn,fini %O A109869 1,2 %A A109869 Elliott Saxton (SwankTank(AT)gmx.net), Mar 19 2006 %E A109869 Definition supplied by _R. J. Mathar_, Apr 02 2006