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 A032201 #13 Jun 20 2018 16:37:44
%S A032201 2,2,5,13,40,128,457,1660,6308,24409,96363,385535,1561706,6387135,
%T A032201 26347199,109471366,457758461,1924845582,8134171456,34526723986,
%U A032201 147139513066,629314845284,2700401538933,11622130671430
%N A032201 Number of rooted compound windmills with n nodes and leaves of 2 colors.
%H A032201 Andrew Howroyd, <a href="/A032201/b032201.txt">Table of n, a(n) for n = 1..200</a>
%H A032201 <a href="/index/Mo#mobiles">Index entries for sequences related to mobiles</a>
%F A032201 Shifts left under "CIK" (necklace, indistinct, unlabeled) transform.
%o A032201 (PARI)
%o A032201 CIK(p,n)={sum(d=1, n, eulerphi(d)/d*log(subst(1/(1+O(x*x^(n\d))-p), x, x^d)))}
%o A032201 seq(n)={my(p=O(1));for(i=1, n, p=2+CIK(x*p, i)); Vec(p)} \\ _Andrew Howroyd_, Jun 20 2018
%K A032201 nonn
%O A032201 1,1
%A A032201 _Christian G. Bower_