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 A038742 #5 Mar 30 2012 18:56:32 %S A038742 1,13,93,486,2080,7756,26193,82263,244906,701075,1950697,5318976, %T A038742 14300161,38078927,100753810,265490007,697759186,1830912101, %U A038742 4799663942,12574986625,32935310938,86245253339,225820609154 %N A038742 T(n,n-5), array T as in A038738. %K A038742 nonn %O A038742 5,2 %A A038742 _Clark Kimberling_, May 02 2000