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 A091622 #3 Mar 30 2012 17:37:13 %S A091622 1,2,6,11,26,61,132,290,638,1390,3012,6496,13940,29793,63450,134628, %T A091622 284764,600596,1263304,2650684,5549117,11592553,24170837,50306424, %U A091622 104527509,216852455,449232326,929378744,1920295902,3963077103 %N A091622 Column 1 of triangle A091615. %K A091622 nonn %O A091622 1,2 %A A091622 _Christian G. Bower_, Jan 23 2004