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 A026679 #6 Mar 30 2012 18:56:10
%S A026679 1,3,8,18,41,87,190,396,851,1761,3754,7740,16419,33777,71410,146676,
%T A026679 309319,634605,1335680,2737830,5753393,11784519,24732602,50628768,
%U A026679 106142095,217168749,454874296,930285390,1947021505
%N A026679 Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026670.
%Y A026679 Partial sums of A026677.
%K A026679 nonn
%O A026679 0,2
%A A026679 _Clark Kimberling_