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 A085224 #8 May 18 2024 18:36:58 %S A085224 2,10,42,50,170,178,202,210,226,682,690,714,722,738,810,818,842,850, %T A085224 866,906,914,930,962,2730,2738,2762,2770,2786,2858,2866,2890,2898, %U A085224 2914,2954,2962,2978,3010,3242,3250,3274,3282,3298,3370,3378,3402,3410,3426,3466 %N A085224 A014486-encodings of the plane general trees whose rightmost subtree (branching from the root) is just a stick: /. %H A085224 <a href="/index/Ro#RootedTreePlanEncodings">Index entries for encodings of plane rooted trees</a> %F A085224 a(n) = (4*A014486(n)) + 2 = A014486(A085223(n)) %K A085224 nonn %O A085224 0,1 %A A085224 _Antti Karttunen_, Jun 23 2003