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 A047136 #8 Jan 20 2020 09:20:22 %S A047136 1,2,5,14,56,188,639,2206,8485,31278,114960,423612,1621969,6160764, %T A047136 23359289,88603820,341015446,1312635338,5052259362,19452272144, %U A047136 75341562629,292245458188,1134351244952,4405229026674,17153557736343 %N A047136 a(n) = T(n,n+1), array T as in A047130. %Y A047136 Cf. A047130. %K A047136 nonn %O A047136 0,2 %A A047136 _Clark Kimberling_ %E A047136 Definition corrected by _Georg Fischer_, Jan 20 2020