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 A027134 #4 Mar 30 2012 18:56:14 %S A027134 1,5,18,76,311,1245,4882,18818,71529,268785,1000422,3693814,13545669, %T A027134 49382777,179117070,646786228,2326351527,8338190053,29792805066, %U A027134 106152792682,377267681865,1337727360957,4733406748722,16716506981356 %N A027134 a(n) = self-convolution of row n of array T given by A027113. %K A027134 nonn %O A027134 0,2 %A A027134 _Clark Kimberling_