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 A027853 #3 Mar 30 2012 17:37:00 %S A027853 0,1,4,15,52,175,571,1838,5834,18363,57372,178271,551344,1698782, %T A027853 5217266,15979465,48825416,148877730,453124341,1376890744,4177819301, %U A027853 12659943750,38317731349,115851225052,349924919167 %N A027853 Functions on n points with a single labeled point. %F A027853 Convolution of A038002 with A001372. %K A027853 nonn %O A027853 0,3 %A A027853 _Christian G. Bower_