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 A055326 #3 Mar 30 2012 17:37:10 %S A055326 1,-1,3,-23,425,-18129,1721419,-353654167,153923102577, %T A055326 -139765654884545,261831303051976691,-1003756293946036677111, %U A055326 7827579773381983088436313,-123626888505819540001029957073 %N A055326 Column 1 of triangle A055325. %K A055326 sign %O A055326 1,3 %A A055326 _Christian G. Bower_, May 12 2000