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 A054198 #3 Mar 30 2012 16:48:46 %S A054198 1,2,5,12,29,70,169,409,995,2439,6033,15068,38005,96807,249049,647137, %T A054198 1698303,4500410,12038113,32489271,88423967,242549338,670146047, %U A054198 1863859739,5215185383,14671904315,41478618523,117776926366,335729266137 %N A054198 Binomial transform of A000011. %K A054198 nonn %O A054198 0,2 %A A054198 _N. J. A. Sloane_, Apr 29 2000