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 A050175 #4 Mar 30 2012 18:57:01
%S A050175 2,5,5,9,14,14,14,28,42,28,20,48,90,90,48,27,75,165,207,165,75,35,110,
%T A050175 275,407,407,275,110,44,154,429,726,858,726,429,154,54,208,637,1209,
%U A050175 1638,1638,1209,637,208,65,273,910,1911,2912,3341
%N A050175 T(n,k)=S(n,k,k-3), 2<=k<=n-3, n >= 5, array S as in A050157.
%e A050175 Rows: {2}; {5,5}; {9,14,14}; ...
%K A050175 nonn,tabl
%O A050175 0,1
%A A050175 _Clark Kimberling_