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 A025188 #3 Mar 30 2012 18:56:01 %S A025188 2,10,60,343,1968,11319,65351,378690,2201772,12839896,75076505, %T A025188 440016174,2584289200,15206283135,89625150180,529040216175, %U A025188 3127061645796,18506252646420,109644576096980,650280444390382 %N A025188 a(n) = T(2n,n+1), where T is the array defined in A025177. %K A025188 nonn %O A025188 1,1 %A A025188 _Clark Kimberling_