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 A115089 #3 Mar 30 2012 18:36:55 %S A115089 1,2,6,21,91,470,2763,17894,125113,932702,7347025,60761449,524852444, %T A115089 4716259252,43936770258,423178496553,4203717419747,42980494150963, %U A115089 451494062943969,4865135046178557,53701937703205383,606454041389250791 %N A115089 Row sums of triangle A115085. %Y A115089 Cf. A115085, A115086 (column 0), A115087 (column 1), A115088 (column 2); A115084. %K A115089 nonn %O A115089 0,2 %A A115089 _Paul D. Hanna_, Jan 13 2006