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 A047095 #4 Mar 30 2012 18:56:53 %S A047095 1,2,7,22,79,278,1021,3752,14023,52640,199248,757360,2892977,11088266, %T A047095 42640759,164413606,635490703,2461411460,9551605730,37126976390, %U A047095 144528973888,563386487780,2198826762318,8591331622208 %N A047095 T(n,n+1), array T as in A047089. %K A047095 nonn %O A047095 0,2 %A A047095 _Clark Kimberling_