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 A049732 #4 Mar 30 2012 18:56:56 %S A049732 4,6,13,22,33,50,67,88,115,140,173,204,241,286,325,374,419,476,535, %T A049732 588,653,716,789,858,925,1010,1091,1180,1263,1348,1449,1540,1649,1746, %U A049732 1855,1966,2067,2192,2307,2432,2557,2678,2813,2950 %N A049732 a(n)=T(n,1), array T as in A049723. %K A049732 nonn %O A049732 0,1 %A A049732 _Clark Kimberling_